Full opinion text
OPINION OF THE COURT AMBRO, Circuit Judge. The primary issues presented in this appeal from the District Court’s order denying preliminary injunctive relief are whether the Free Speech and Free Exercise Clauses of the First Amendment allow the Borough of Tenafly, Néw Jersey, which has permitted various secularly motivated violations of a facially neutral ordinance, to invoke that ordinance against comparable religiously motivated acts by Orthodox Jews. Because there is no evidence that the acts in question are expressive, we hold that the Free Speech Clause does not apply. We further hold, however, that the Borough’s selective enforcement of its ordinance likely violated the Free Exercise Clause. Because the other requirements for injunctive relief are satisfied, we reverse and direct the District Court to issue a preliminary injunction. I. Background An ordinance in the Borough of Tenafly, which encompasses 4.4 square miles and has a population of 13,806 provides in pertinent part: “No person shall place any sign or advertisement, or other matter upon any pole, tree, curbstone, sidewalk or elsewhere, in any public street or public place, excepting such as may be authorized by this or any other ordinance of the Borough.” Tenafly, N.J., Ordinance 691 Article VIII(7) (1954). Although Ordinance 691 does not allow Borough officials to make exceptions on a case-by-case basis, in practice they have often done so. House number signs nailed to utility poles in plain view are frequently left in place. Local churches are tacitly allowed to post permanent directional signs bearing crosses on municipal property. Lost animal signs and other private postings often remain undisturbed by Borough officials. Orange ribbons were affixed to utility poles “for a lengthy period of time” by supporters of the local high school during a protracted controversy over school regionalization, but Borough officials made no effort to remove them. Every year, officials in the small community permit the local Chamber of Commerce to affix holiday displays to the Borough’s utility poles for approximately six weeks during the Christmas holiday season. Red ribbons, wreaths, and seasonal holiday lights are attached to the Borough’s utility poles as part of these displays. The plaintiffs in this case are Orthodox Jewish residents of Tenafly whose faith forbids them from pushing or carrying objects outside their homes on the Sabbath or Yom Kippur. In accordance with a religious convention practiced by Orthodox Jews for over two thousand years, however, the plaintiffs believe they may engage in such activities outside their homes on the Sabbath within an eruv, a ceremonial demarcation of an area. Tenafly Eruv Ass’n, Inc. v. Borough of Tenafly, 155 F.Supp.2d 142, 146 (D.N.J.2001). An eruv extends the space within which pushing and carrying is permitted on the Sabbath beyond the boundaries of the home, thereby enabling, for example, the plaintiffs to push baby strollers and wheelchairs, and carry canes and walkers, when traveling between home and synagogue. Without an eruv Orthodox Jews who have small children or are disabled typically cannot attend synagogue on the Sabbath. Centuries ago, an eruv would be built using ropes and wooden poles. Today, Orthodox Jews can construct an eruv by attaching lechis■ — thin black strips made of the same hard plastic material as, and nearly identical to, the coverings on ordinary ground wires — vertically along utility poles. Along with preexisting horizontal overhead utility lines, the lechis designate an eruv’s boundaries. Unless one knows which black plastic strips are lechis and which are utility wires, it is “absolutely impossible” to distinguish the two. Id. at 149. Throughout this litigation, the plaintiffs have maintained that an eruv (as well as each constituent lechi) is “not a religious symbol,” but rather is an item with “religious significance.” Id. at 148. On June 1, 1999, Erez Gotlieb and Gary Osen, two Orthodox Jews who are not parties to this case, met with Tenafly May- or Ann Moscovitz to discuss creating an eruv in the Borough. Gotlieb and Osen met with Moscovitz because under Orthodox Jewish law an eruv is not valid unless a civil official with jurisdiction over the circumscribed area issues a ceremonial proclamation “renting” the area for a nominal fee (e.g., one dollar). The Mayor said she lacked authority to issue the requested proclamation, but agreed to bring the matter to the attention of the Borough Council, the Borough’s legislative branch. She did not mention Ordinance 691 or suggest that affixing lechis to utility poles might violate any other ordinance. At the next Council meeting, on July 8, 1999, the Council and approximately thirty Tenafly residents debated whether the Borough should grant the proclamation. Many of those present expressed vehement objections prompted by their fear that an eruv would encourage Orthodox Jews to move to Tenafly. A Council member whom the District Court was unable to identify noted “a concern that the Orthodoxy would take over” Tenafly. Id. at 151-52. One Council member voiced his “serious concern” that “Ultra-Orthodox” Jews might “stone[ ] cars that drive down the streets on the Sabbath.” Id. at 153— 54. The Borough Attorney participated in the debate. Neither he nor anyone else mentioned Ordinance 691 or indicated that attaching lechis to utility poles might be unlawful. The Council decided to demand a formal, written proposal before voting on whether to issue the proclamation. Mayor Moscovitz advised Gotlieb and Osen, who did not attend the meeting, that the Council was unlikely to grant their request for a proclamation, but invited them to submit a formal application. Frustrated by the Borough’s reticence, in August 1999 TEAI asked Bergen County Executive William P. Schuber, whose jurisdiction includes Te-nafly, to issue the ceremonial proclamation necessary to validate the emu. On December 15, 1999, he did so. The constitutionality of this action is not challenged in this case, and neither Schuber nor any other Bergen County official is a party. Verizon, the local telephone company, owns the utility poles in Tenafly, though the poles are located on the Borough’s property. In April 2000, the plaintiffs asked Verizon for permission to attach le-chis to its utility poles. The plaintiffs said in a sworn statement, which the District Court found “credible,” that they did not believe any municipal ordinance prohibited them from doing so, and thus that they did not need the Council’s permission. Id. at 155. After the plaintiffs informed Verizon about the proclamation, they say, the company’s in-house counsel researched whether municipal approval was required and advised the plaintiffs that it was not. In June 2000 Cablevision, holder of the local cable television franchise, volunteered to help the plaintiffs affix lechis to Verizon’s utility poles as a community service. With the help of Cablevision personnel and equipment, an eruv was completed in Te-nafly sometime in September 2000. The plaintiffs represent, and the Borough does not disagree, that only private funds have supported the eruv and that no municipal assistance of any kind will be needed to maintain it. Borough officials apparently did not learn that an eruv was being erected in Tenafly until late August 2000. Mayor Moscovitz and Councilman Charles Lipson met with two local Jewish leaders on September 14, 2000, to discuss the matter. One of the Jewish leaders perceived some of the Mayor’s remarks as derogatory toward Orthodox Jews, and the meeting was unproductive. Twelve days later, Borough Administrator Joseph DiGiacomo, acting at the Mayor’s behest, asked Cablevision why it helped attach the lechis without the Borough’s permission. According to DiGiacomo, the company told him that “a Rabbi” had advised it that TEAI had the necessary government approval. Id. at 158. On October 10, 2000, Mayor Moscov-itz and the Council directed the Borough Administrator to ask Cablevision to remove the lechis from the utility poles “as soon as possible.” Id. On October 23,' 2000, Cablevision wrote to the plaintiffs and informed them that the Borough instructed it to take down the lechis. Cablevision said it would begin complying with the Borough’s order within three days unless the plaintiffs demonstrated they had municipal approval. Counsel for the plaintiffs subsequently negotiated from the Borough a thirty-day reprieve to give TEAI an opportunity to apply for permission from the Council to maintain the emv. The letter setting out this agreement, sent by the plaintiffs’ counsel to Borough Attorney Walter Lesnevich, states in part: “I also appreciate your advice that the Borough has no specific ordinance covering this matter or any particular format for the Emv Association to follow in submitting its request.” Id. at 159. By the beginning of November 2000, neither Lesnevich nor any other Borough official had raised the possibility that Ordinance 691 or another ordinance might be relevant to the dispute over the lechis. On November 7, 2000, the plaintiffs filed their application with the Borough, asking the Council not to remove or order the removal of the lechis. On November 21, 2000, the Council decided to hold two hearings to allow members of the public to comment on the plaintiffs’ proposal. The Council scheduled the first hearing for November 28, 2000, and the second for December 12, 2000. Fifty-four members of the public, including plaintiff Chaim Book and other emv proponents, spoke at the two hearings. The speakers were evenly divided between supporters and opponents of the emv. During the hearings, Council members did not express their views until the conclusion of the December 12 hearing. At that hearing, just before the Council voted on the plaintiffs’ application, one Councilman stated that “[t]o the best of my knowledge,” the Borough had “no ordinance, no resolution that says that you cannot hang something from a utility pole.” Mayor Moscovitz responded by saying “[t]here is an ordinance,” and Lesnevich then described Ordinance 691. This exchange was apparently the first time that Borough officials mentioned Ordinance 691 with regard to the lechis. Shortly after Lesnevich brought Ordinance 691 to the Council members’ attention, the Council voted 5-0 to force the plaintiffs to remove the lechis. The next day, the Borough ordered Cablevision to take the lechis off the utility poles “as soon as possible.” 155 F.Supp.2d at 163. The plaintiffs responded by suing in the District Court on December 15, 2000, alleging violations of the First and Fourteenth Amendments, 42 U.S.C. §§ 1983 and 1985, and the Fan- Housing Act (“FHA”), 42 U.S.C. § 3604(a), and seeking an injunction barring the Borough from interfering with the emv. Pursuant to Federal Rule of Civil Procedure 65(b), the District Court issued a temporary restraining order precluding the Borough from disturbing the emv. Consent orders extended the duration of the restraint until the Court ruled on the plaintiffs’ request for a preliminary injunction. After the parties completed limited discovery, the Court held an evidentiary hearing that spanned four days, received additional affidavits, and heard oral arguments. On August 10, 2001, the Court issued an opinion denying the plaintiffs’ request for injunctive relief on the ground that they are not reasonably likely to succeed on the merits of any of their claims. The District Court’s discussion began with the plaintiffs’ claim that the Borough violated the First Amendment’s Free Speech Clause. The Court concluded (albeit without citing our decision in Troster v. Pennsylvania State Department of Corrections, 65 F.3d 1086 (3d Cir.1995)) that the act of affixing lechis to utility poles is “symbolic speech.” 155 F.Supp.2d at 173. Next the Court determined that the Borough’s utility poles are a nonpublie forum, and that the Borough did not discriminate against the plaintiffs’ religious viewpoint when it ordered the lechis removed. Id. at 174-80. The Court acknowledged that the Borough had expressly or tacitly permitted various facial violations of Ordinance 691, such as the holiday displays and church directional signs. But it distinguished the lechis, reasoning that the other materials affixed to the utility poles served commercial or functional purposes, were not religious in nature, and were not intended to be attached permanently. Id. at 176-78. Other items frequently affixed to utility poles in violation of Ordinance 691, such as the lost animal signs and permanently attached house numbers, did not show discriminatory enforcement because the Borough said it made efforts to remove some of them after the plaintiffs sued. Id. at 177-78. As for the orange ribbons, the Court stated that, notwithstanding Mayor Moscovitz’s testimony and other evidence in the record, it “lack[ed] sufficient information” to find that the Borough knew about and tacitly approved them. Id. at 177. The Court concluded that the Borough’s application of the ordinance did not discriminate against the plaintiffs’ religious viewpoint, and thus their free speech claim could not succeed. Id. at 180. The District Court also rejected the plaintiffs’ claim that the Borough violated the First Amendment’s Free Exercise Clause. Id. at 180-86. The Court disagreed with the plaintiffs’ position that the objective effect of the Borough’s decision was to discriminate against religiously motivated activity. It noted that, under Lyng v. Northwest Indian Cemetery Protective Ass’n, 485 U.S. 439, 108 S.Ct. 1319, 99 L.Ed.2d 534 (1988), the Borough can deny access to utility poles on its land for a religion-neutral reason even if doing so imposes an “incidental” burden on Orthodox Jews’ ability to practice their religion. 155 F.Supp.2d at 180-81. The Court reasoned that because the Borough ordered the lechis taken down pursuant to Ordinance 691, “a pre-existing, neutral law of general applicability,” the issue was controlled by the Supreme Court’s ruling in Employment Division v. Smith, 494 U.S. 872, 110 S.Ct. 1595, 108 L.Ed.2d 876 (1990), rather than by its subsequent decision in Church of the Lukumi Babalu Aye, Inc. v. City of Hialeah, 508 U.S. 520, 113 S.Ct. 2217, 124 L.Ed.2d 472 (1993). 155 F.Supp.2d at 181. The Court did not consider whether its earlier conclusion that Borough officials chose not to enforce Ordinance 691 with respect to some secularly motivated commercial and functional postings, see id. at 177-80, affected the free exercise analysis. Under Smith, the District Court reasoned, the Borough Council’s decision to enforce Ordinance 691 against the eruv had an objectively neutral effect that did not implicate the Free Exercise Clause. Id. The Court thought, however, that the Council members’ improper subjective motivations nonetheless necessitated strict scrutiny under Lukumi. Id. at 183. It found that, while the Council members had no religious animosity, they acted because of the “constitutionally impermissible” fear that the eruv would facilitate the formation of an insular Orthodox Jewish “community within a community” in Tenafly. Id. at 182-83. Nevertheless, no Free Exercise Clause violation occurred because the Council members’ decision was “narrowly tailored to further their interest in avoiding the appearance of an Establishment Clause concern.” Id. at 184 n. 26 (emphasis added). Finally, the Court held that the plaintiffs lack standing to sue under the FHA because the Borough did not “make unavailable or deny” housing within the meaning of the relevant provision, 42 U.S.C. § 3604(a). Id. at 186-90. Every case finding a violation of § 3604(a), the District Court noted, involved conduct that “directly affected the availability of housing,” whereas the plaintiffs seek a “non-housing use of municipal property.” Id. at 187. The Court concluded that, because the plaintiffs were not reasonably likely to succeed on any of their claims, injunctive relief was not appropriate. The plaintiffs timely appealed, giving us jurisdiction pursuant to 28 U.S.C. § 1292(a)(1), and we granted their request for an injunction prohibiting removal of the lechis pending our decision. Tenafly Eruv Ass’n, Inc. v. Borough of Tenafly, No. 01-3301 (3d Cir. Sept. 19, 2001) (order). II. Standard of Review We review the District Court’s ultimate decision to deny a preliminary injunction for abuse of discretion. See Dam Things from Denmark, a/k/a Troll Co. ApS, v. Russ Berrie & Co., 290 F.3d 548, 556 (3d Cir.2002); St. Thomas-St. John Hotel & Tourism Ass’n, Inc. v. Virgin Islands, 218 F.3d 232, 235 (3d Cir.2000). But “ ‘any determination that is a prerequisite to the issuance of an injunction ... is reviewed according to the standard applicable to that particular determination.’ ” Southco, Inc. v. Kanebridge Corp., 258 F.3d 148, 150-51 (3d Cir.2001) (quoting Am. Tel. & Tel. Co. v. Winback and Conserve Program, Inc., 42 F.3d 1421, 1427 (3d Cir.1994)). Thus “we exercise plenary review over the District Court’s conclusions of law and its application of the law to the facts.” Id. at 151 (quoting Duraco Prods., Inc. v. Joy Plastic Enters., Ltd., 40 F.3d 1431, 1438 (3d Cir.1994)). Ordinarily we will not disturb the factual findings supporting the disposition of a preliminary injunction motion in the absence of clear error. See Fed.R.Civ.P. 52(a); Novartis Consumer Health, Inc. v. Johnson & Johnson-Merck Consumer Pharm. Co., 290 F.3d 578, 586 (3d Cir.2002); S. Camden Citizens in Action v. N.J. Dep’t of Envtl. Protection, 274 F.3d 771, 777 (3d Cir.2001). This case, however, involves First Amendment claims, and “the reaches of the First Amendment are ultimately defined by the facts it is held to embrace.” Hurley v. Iris-Amencan Gay, Lesbian & Bisexual Group of Boston, 515 U.S. 557, 567, 115 S.Ct. 2338, 132 L.Ed.2d 487 (1995). Therefore, we have “a constitutional duty to conduct an independent examination of the record as a whole,” and we cannot defer to the District Court’s factual findings unless they concern witnesses’ credibility. Id.; Bose Corp. v. Consumers Union of United States, Inc., 466 U.S. 485, 499, 510-11, 104 S.Ct. 1949, 80 L.Ed.2d 502 (1984); Christ’s Bride Ministries, Inc. v. Southeastern Pa. Transp. Auth., 148 F.3d 242, 247 (3d Cir.1998). Accordingly, we examine independently the facts in the record and “draw our own inferences” from them. Christ’s Bride, 148 F.3d at 247. III. Discussion Four factors governed the District Court’s decision whether to issue a preliminary injunction barring the Borough from removing the eruv. To obtain an injunction, the plaintiffs had to demonstrate (1) that they are reasonably likely to prevail eventually in the litigation and (2) that they are likely to suffer irreparable injury without relief. See S. Camden Citizens, 274 F.3d at 777; Adams v. Freedom Forge Corp., 204 F.3d 475, 484 (3d Cir.2000). If these two threshold showings are made the District Court then considers, to the extent relevant, (3) whether an injunction would harm the Borough more than denying relief would harm the plaintiffs and (4) whether granting relief would serve the public interest. See S. Camden Citizens, 274 F.3d at 777; Freedom Forge, 204 F.3d at 484. Because the District Court ended its analysis after concluding that the plaintiffs did not show that their claims are reasonably likely to succeed, see 155 F.Supp.2d at 171, 191, our discussion focuses on that factor. Disposing of the plaintiffs’ FHA claim in the margin, we will first consider the plaintiffs’ free speech claim and then discuss their free exercise claim. A. The Free Speech Claim The First Amendment’s Free Speech Clause provides that “Congress shall make no law ... abridging the freedom of speech.” U.S. Const, amend. I. “Speech” is not construed literally, or even limited to the use of words. Constitutional protection is afforded not only to speaking and writing, but also to some nonverbal acts of communication, viz., “expressive conduct” (or “symbolic speech”). Affixing leehis to utility poles does not involve the use of words, so the plaintiffs’ behavior is protected by the Free Speech Clause only if it constitutes expressive conduct. Conduct is protected by the First Amendment when “the nature of [the] activity, combined with the factual context and environment in which it was undertaken,” shows that the “activity was sufficiently imbued with elements of communication to fall within the [First Amendment’s] scope.” Spence v. Washington, 418 U.S. 405, 409-10, 94 S.Ct. 2727, 41 L.Ed.2d 842 (1974); Troster v. Pa. State Dep’t of Corrections, 65 F.3d 1086, 1090 (3d Cir.1995). Context is crucial to evaluating an expressive conduct claim because “the context may give meaning to the symbol” or act in question. Spence, 418 U.S. at 410, 94 S.Ct. 2727. Until 1995, the Supreme Court determined whether speech is “sufficiently imbued with elements of communication” by asking “whether ‘[a]n intent to convey a particularized message was present, and [whether] in the surrounding circumstances the likelihood was great that the message would be understood by those who viewed it.'” Texas v. Johnson, 491 U.S. 397, 404, 109 S.Ct. 2533, 105 L.Ed.2d 342 (1989) (quoting Spence, 418 U.S. at 410-11, 94 S.Ct. 2727). Applying this two-prong test (the “Spence-Johnson test”), the Supreme Court held that the First Amendment shelters certain forms of nonverbal communication. For instance, Johnson held that burning an American flag as part of a demonstration against the Reagan Administration’s policies that coincided with the 1984 Republican Party convention was “speech” because its “expressive, overtly political nature” was “both intentional and overwhelmingly apparent” to the protestors’ audience. 491 U.S. at 399, 406, 109 S.Ct. 2533. Similarly, Spence held that attaching a peace symbol to an American flag and displaying the “peace flag” upside down was protected expression. The actor “testified that he put a peace symbol on the flag and displayed it to public view as a protest against the invasion of Cambodia and the killings at Kent State University, events which occurred a few days prior to his arrest,” and “it would have been difficult for the great majority of citizens to miss the drift of appellant’s point at the time that he made it.” 418 U.S. at 408, 410, 94 S.Ct. 2727. Additional types of nonverbal communication have also been deemed constitutionally protected. See, e.g., Schacht v. United States, 398 U.S. 58, 62-63, 90 S.Ct. 1555, 26 L.Ed.2d 44 (1970) (wearing United States military uniforms as part of theatrical presentation opposing Vietnam War); Tinker v. Des Moines Indep. Community Sch. Dist., 393 U.S. 503, 505-06, 89 S.Ct. 733, 21 L.Ed.2d 731 (1969) (wearing black armband at school to protest Vietnam War); W. Va. Bd. of Educ. v. Barnette, 319 U.S. 624, 632, 63 S.Ct. 1178, 87 L.Ed. 1628 (1943) (saluting the American flag to show allegiance to the United States); Stromberg v. California, 283 U.S. 359, 369, 51 S.Ct. 532, 75 L.Ed. 1117 (1931) (displaying red flag to express opposition to organized government). In other cases, the Court assumed, without deciding, that the nonverbal political demonstrations at issue implicated the First Amendment. Clark v. Community for Creative Non-Violence, 468 U.S. 288, 293, 104 S.Ct. 3065, 82 L.Ed.2d 221 (1984) (sleeping in a public park in front of the White House and on the Washington Mall, in the middle of winter, to protest homelessness); United States v. O’Brien, 391 U.S. 367, 376, 88 S.Ct. 1673, 20 L.Ed.2d 672 (1968) (burning Selective Service registration certificate on courthouse steps to protest war). The Supreme Court’s unanimous 1995 opinion, Hurley v. Irish-American Gay, Lesbian and Bisexual Group of Boston, 515 U.S. 557, 115 S.Ct. 2338, 132 L.Ed.2d 487 (1995), modified somewhat the test for determining when conduct constitutes “speech.” In Hurley, a group of gays, lesbians, and bisexuals of Irish ancestry sued under a state public accommodations law barring discrimination on the basis of sexual orientation in an attempt to gain admission to a private St. Patrick’s Day parade in which an array of disparate groups participated. While the parade organizers asserted their First Amendment right to shape the content of their speech, the plaintiffs maintained that the organizers had no First Amendment interest because their lack of selectivity in accepting participants made it impossible for spectators to discern a specific message. Rejecting the plaintiffs’ contention, the Supreme Court explained that “a narrow, succinctly articulable message is not a condition of constitutional protection, which if confined to expressions conveying a ‘particularized message,’ would never reach the unquestionably shielded painting of Jackson Pol-iak, music of Arnold Schoenberg, or Jab-berwocky verse of Lewis Carroll.” Id. at 569, 115 S.Ct. 2338 (quoting Spence, 418 U.S. at 411, 94 S.Ct. 2727). By establishing that “a private speaker does not forfeit constitutional protection simply by combining multifarious voices, or by failing to edit their themes to isolate an exact message as the exclusive subject matter of the speech,” Hurley eliminated the “particularized message” aspect of the Spence-Johnson test. Id. at 569-70, 115 S.Ct. 2338. The Hurley Court had no need to formulate a new test, however, because — unlike conduct that is not normally communicative — parades are inherently expressive. Id. at 568, 115 S.Ct. 2338 (“Parades are thus a form of expression, not just motion, and the inherent expressiveness of marching to make a point explains our cases involving protest marches.”). Thus Hurley left open how courts should evaluate symbolic speech claims. Before Hurley, we treated the Spence-Johnson factors as prerequisites for conduct to be deemed expressive. See Steirer by Steirer v. Bethlehem Area Sch. Dist., 987 F.2d 989, 995, 997 (3d Cir.1993) (holding that participating in community service is not expressive conduct). But after Hurley, our decision in Troster v. Pennsylvania State Department of Corrections, 65 F.3d 1086 (3d Cir.1995), concluded that Spence (and, implicitly, Johnson as well) set signposts rather than requirements, and that its two factors can no longer be viewed as the only criteria. See id. at 1090 & n. 1. Because Spence “contained no language of necessity,” we adopted the following standard: conduct is expressive if, “considering ‘the nature of[the] activity, combined with the factual context and environment in which it was undertaken,’ we are led to the conclusion that the ‘activity was sufficiently imbued with elements of communication to fall within the scope of the First and Fourteenth Amendments.’ ” Id. at 1090 (quoting Spence, 418 U.S. at 409-10, 94 S.Ct. 2727) (alteration in original). We emphasized that this “is a fact-sensitive, context-dependent inquiry,” and that the putative speaker bears the burden of proving that his or her conduct is expressive. Id. We then applied this formulation to reject a state corrections officer’s claim that a regulation mandating that each corrections officer wear an American flag patch on his uniform’s right shirt-sleeve, with the star field facing his rear, violated the First Amendment by compelling him to engage in expressive conduct. Id. at 1088. The officer believed that compulsory display debases the flag and that “displaying the flag with its star field to the rear signifies cowardice and retreat from the principles for which the flag stands.” Id. Though we recognized the strength of the officer’s convictions, we determined that he did not show that the act of wearing a flag patch was sufficiently communicative to receive First Amendment protection, as he did not present “evidence to support his otherwise bare assertion that the flag patch regulation compels expressive conduct.” Id. at 1091 n. 4. Our discussion in Troster focused on two inquiries. First, we examined whether the officer intended subjectively (i.e., actually intended) for his conduct to communicate to persons whom he expected to observe it (i.e., his intended audience). We determined that there was no proof that his conduct was “demonstrative of an attitude or belief’ or that he “actually assert[ed] anything to anyone.” Id. at 1091-92. Second, we considered whether observers understood the message the officer intended his conduct to convey. The record contained no evidence that “observers would likely understand the patch or the wearer to be telling them anything about the wearers’ beliefs” or “that the flag patch on the correctional officers’ uniform will relay any message (ideological or otherwise) to anyone.” Id. at 1091-92 (emphases in original). Therefore, the officer’s compelled speech claim failed because he did not show that the conduct in which he was forced to engage was expressive. Our emphasis in Troster on the putative speaker’s burden of proving that his conduct is “sufficiently imbued with elements of communication” is important to our resolution of the plaintiffs’ expressive conduct claim in this case. If the putative speaker’s burden were “limited to ‘the advancement of a plausible contention’ that [his or her] conduct is expressive” — a view espoused by a plurality of the D.C. Circuit but rejected by the Supreme Court in Clark — the result “would be to create a rule that all conduct is presumptively expressive.” Clark, 468 U.S. at 293 n. 5, 104 S.Ct. 3065. Such a rule would be inconsistent with the Supreme Court’s repeated admonition that “[w]e cannot accept the view that an apparently limitless variety of conduct can be labeled ‘speech.’ ” O’Brien, 391 U.S. at 376, 88 S.Ct. 1673; see also Johnson, 491 U.S. at 404, 109 S.Ct. 2533; Spence, 418 U.S. at 409, 94 S.Ct. 2727. Therefore, as we stressed in Troster, 65 F.3d at 1091-92, and as the Supreme Court held in Clark, “it is the obligation of the person desiring to engage in assertedly expressive conduct to demonstrate that the First Amendment even applies.” Clark, 468 U.S. at 293 n. 5, 104 S.Ct. 3065. With this background as context, we conclude that the plaintiffs have not met their burden of showing that affixing lechis to utility poles is “sufficiently imbued with elements of communication” to be deemed expressive conduct. The ree-ord indicates that the lechis were attached for the benefit of other Orthodox Jews, not the general public. Therefore, if the plaintiffs’ conduct is expressive, their intended audience is other Orthodox Jews. But the plaintiffs have not introduced evidence that the lechis are meant to demonstrate a belief or assert anything to Orthodox Jews or that Orthodox Jews “likely understand” the eruv “to be telling them anything,” i.e., that they discern “any message (ideological or otherwise)” from the lechis. Troster, 65 F.3d at 1091 (emphases in original). Instead, on the record before us, it appears that the eruv serves a purely functional, non-eommunicative purpose indistinguishable, for free speech purposes, from that of a fence surrounding a yard or a wall surrounding a building. Rather than “actually assert[ing] anything to anyone,” id. at 1092, it seems that the eruv simply demarcates the space within which certain activities otherwise forbidden on the Sabbath are allowed. Plaintiff Chaim Book described the eruv as a “boundary” that “requires physical demarcation,” a function historically achieved by “rop[ing] an area off.” Similarly, at oral argument counsel for the plaintiffs told us that the lechis “replace[ ] the pole[s] that would be used prior to the time there were telephone poles” to designate the eruv’s boundaries. While the plaintiffs describe the eruv in functional terms, explaining that it establishes an area within which Orthodox Jews may engage in certain otherwise impermissible activities, they offer no evidence that it communicates anything. The only evidence the plaintiffs introduced with respect to the religious significance of the eruv was the affidavit of Rabbi Hershel Schachter of Yeshiva University, an expert on Orthodox Jewish law. Rabbi Schachter explained that the eruv enables couples with young children and persons who use wheelchairs to attend synagogue on the Sabbath. He did not, however, suggest that the Orthodox Jews who affix lechis intend to send any message thereby, or that the eruv conveys any message to Orthodox Jews. Further, there is no evidence that Orthodox Jews receive a message or ascertain the eruv’-s boundaries by looking at the lechis. To the contrary, Rabbi Howard Jachter, speaking on behalf of the TEAI, said that “most Orthodox Jews do not ... would not know how to make an eruv, wouldn’t see where the eruv is, how it is. A rabbi wouldn’t know how it is.” Even plaintiff Chaim Book, who is obviously familiar with the eruv’s boundaries and the lechis’ locations, said, “I, who know some of the poles have lechis, have a hard time recognizing the lechi on the pole by just looking at it.” In addition, plaintiffs’ complaint states that “the eruv is not a religious symbol.” Thus there is no evidence contradicting the Borough’s assertion at oral argument — which the plaintiffs did not dispute — that Orthodox Jews learn the eruv’s boundaries by word of mouth from the persons charged with erecting and inspecting it. Even if the plaintiffs had introduced evidence that the lechis serve a boundary function, that would be insufficient to prove they are “sufficiently imbued with elements of communication to fall within the scope of the First and Fourteenth Amendments.” Troster, 65 F.3d at 1090 (internal quotation marks omitted). All boundary lines delineate the realms within which certain activities are or are not allowed. For instance, the invisible boundary between Nevada and Utah separates an area where gambling is legal from one where it is not. A homeowner’s fence demarcates where his neighbor’s garden must stop. The walls of a synagogue delineate the space where congregational worship takes place. But geographical boundary lines, fences, and walls are simply not protected expression in the absence of evidence that some “attitude or belief,” Troster, 65 F.3d at 1091, is conveyed or received from them. Cf. Dallas v. Stanglin, 490 U.S. 19, 25, 109 S.Ct. 1591, 104 L.Ed.2d 18 (1989) (“It is possible to find some kernel of expression in almost every activity a person undertakes — for example, walking down the street or meeting one’s friends at a shopping mall — but such a kernel is not sufficient to bring the activity within the protection of the First Amendment.”); Pro v. Donatucci, 81 F.3d 1283, 1293 (3d Cir.1996) (Roth, J., dissenting) (noting that “expression and communication are the crucial attributes of speech,” that “[n]owhere is this stress on expression and communication more clear than in the Court’s approach to speech that falls outside the traditional domain of the spoken or written word,” and that “[t]he classic examples of conduct-as-speech all contain patently expressive messages.”). Otherwise, the act of constructing houses of worship would implicate the Free Speech Clause, whereas courts consistently analyze the constitutionality of zoning regulations limiting such construction under the Free Exercise Clause, not the Free Speech Clause. See, e.g., City of Boerne v. Flores, 521 U.S. 507, 534, 117 S.Ct. 2157, 138 L.Ed.2d 624 (1997); Messiah Baptist Church v. County of Jefferson, 859 F.2d 820, 823-26 (10th Cir.1988); Lakewood, Ohio Congregation of Jehovah’s Witnesses, Inc. v. City of Lakewood, 699 F.2d 303, 307-08 (6th Cir.1983); Church of Jesus Christ of Latter-Day Saints v. Jefferson County, 741 F.Supp. 1522, 1527-34 (N.D.Ala.1990); cf. Congregation Kol Ami v. Abington Township, 2002 WL 31312280 (3d Cir. Oct.16, 2002). Moreover, if solely the act of erecting a wall separating the interior of a building from the secular world constituted “speech,” every religious group that wanted to challenge a zoning regulation preventing them from constructing a house of worship could raise a “hybrid” rights claim triggering strict scrutiny, see Employment Division v. Smith, 494 U.S. 872, 881-82, 110 S.Ct. 1595, 108 L.Ed.2d 876 (1990), a notion so astonishing that we are unaware of any court — or even any law review article— that has suggested it. Plaintiffs maintain that, although the eruv is functional, it is also expressive, just as the 18-foot Chanukah menorah in Allegheny County v. Greater Pittsburgh ACLU, 492 U.S. 573, 109 S.Ct. 3086, 106 L.Ed.2d 472 (1989), was expressive even though the functional purpose of menorahs is to hold candles. To the extent that the plaintiffs’ point is that functionality and expression are “not mutually exclusive,” we do not disagree; things ordinarily used for functional purposes can be used for communicative purposes as well. Name. Space, Inc. v. Network Solutions, Inc., 202 F.3d 573, 586 (2d Cir.2000) (concluding that Internet domain names are ordinarily functional, but can be expressive if they contain a message, e.g., “.jones_for_presi-dent”). But there is no evidence that the eruv is an example of such overlapping purposes, whereas there was ample evidence to that effect in Allegheny. As part of a holiday display that stood at the entrance to a government building and included a 45-foot Christmas tree, the 18-foot menorah was both intended and understood to express “a recognition that Christmas is not the only traditional way of observing the winter-holiday season” and “an acknowledgment of Chanukah as a contemporaneous alternative tradition.” Allegheny, 492 U.S. at 617-18, 109 S.Ct. 3086. In sharp contrast here, there is no evidence that Orthodox Jews intend or understand the eruv to communicate any idea or message. Rather, the evidence shows that the eruv-like a fence around a house or the walls forming a synagogue-serves the purely functional purpose of delineating an area within which certain activities are permitted. We also reject the plaintiffs’ contention that the eruv may be deemed expressive simply because some residents of Tenafly who are not Orthodox Jews discern various unintended messages emanating from it, notwithstanding that these persons would not be intended recipients even if the lechis were meant to send a message. To accept this position would mean that whether conduct is expressive depends entirely on how observers perceive it-even if the actor had no communicative intent, and even if the actor disapproves of the message (or messages) discerned by the observers. See Troster, 65 F.3d at 1092 (noting the difference between an observer’s independent inference from an actor’s behavior and an observer’s ' receipt of a nonverbal message intentionally sent by the actor); Peter Meijes Tiersma, Nonverbal Communication and the Freedom of “Speech”, 1993 Wis. L.Rev. 1525, 1553, 1561-62 (stating that nonverbal conduct is expressive only if it involves “a conscious transfer of information,” i.e., “an attempt to communicate” by the actor). Finally, we cannot accept the plaintiffs’ argument that, by analogy to the protection afforded newsracks, the eruv is protected under the First Amendment. Relying on City of Lakewood v. Plain Dealer Publ’g Co., 486 U.S. 750, 108 S.Ct. 2138, 100 L.Ed.2d 771 (1988), the plaintiffs insist that, just as newsracks facilitate the distribution of newspapers, the eruv facilitates religious worship. But City of Lakewood did not treat newsracks as protected based on the sweeping rationale that they facilitate speech, but rather because they are inextricably intertwined with speech. Id. at 768, 108 S.Ct. 2138 (“The actual ‘activity’ at issue here is the circulation of newspapers, which is constitutionally protected.”). Unlike a news-rack, which facilitates the paradigm of communication (the sale of newspapers), there is no evidence that the eruv is inextricably linked to a communicative activity. Instead, the record shows that the eruv exists solely to designate the boundaries within which Orthodox Jews can engage in certain activities on the Sabbath. Therefore, City of Lakewood does not support the plaintiffs’ position that the non-communicative act of delineating an area constitutes protected expression. In sum, as in Troster, the plaintiffs offer nothing more than a “bare assertion” that their conduct is expressive. 65 F.3d at 1091 n. 4. Because this does not satisfy the plaintiffs’ burden of proof, their free speech claim fails. B. The Free Exercise Claim 1. Determining the appropriate level of scrutiny The Free Exercise Clause, which binds the Borough pursuant to the Fourteenth Amendment, see Cantwell v. Connecticut, 310 U.S. 296, 303, 60 S.Ct. 900, 84 L.Ed. 1213 (1940), provides that “Congress shall make no law ... prohibiting the free exercise [of religion].” U.S. Const, amend. I. Depending on the nature of the challenged law or government action, a free exercise claim can prompt either strict scrutiny or rational basis review. If a law is “neutral” and “generally applicable,” and burdens religious conduct only incidentally, the Free Exercise Clause offers no protection. Employment Div. v. Smith, 494 U.S. 872, 879, 110 S.Ct. 1595, 108 L.Ed.2d 876 (1990). Smith held that the Free Exercise Clause did not require a state to exempt the ingestion of peyote during a Native American Church ceremony from its neutral, generally applicable prohibition on using that drug. Id. at 882, 110 S.Ct. 1595. On the other hand, if the law is not neutral (ie., if it discriminates against religiously motivated conduct) or is not generally applicable (i.e., if it proscribes particular conduct only or primarily when religiously motivated), strict scrutiny applies and the burden on religious conduct violates the Free Exercise Clause unless it is narrowly tailored to advance a compelling government interest. Church of the Lukumi Babalu Aye, Inc. v. City of Hialeah, 508 U.S. 520, 532, 542, 113 S.Ct. 2217, 124 L.Ed.2d 472 (1993). Further, the Free Exercise Clause’s mandate of neutrality toward religion prohibits government from “deciding that secular motivations are more important than religious motivations.” Fraternal Order of Police v. City of Newark, 170 F.3d 359, 365 (3d Cir.1999). Accordingly, in situations where government officials exercise discretion in applying a facially neutral law, so that whether they enforce the law depends on their evaluation of the reasons underlying a violator’s conduct, they contravene the neutrality requirement if they exempt some secularly motivated conduct but not comparable religiously motivated conduct. See Lukumi, 508 U.S. at 537, 113 S.Ct. 2217; Smith, 494 U.S. at 884, 110 S.Ct. 1595; Bowen v. Roy, 476 U.S. 693, 708, 106 S.Ct. 2147, 90 L.Ed.2d 735 (1986) (plurality opinion); Fraternal Order of Police, 170 F.3d at 364-65. Thus in Lukumi the Supreme Court invalidated an ordinance “punishing ‘[wjhoever ... unnecessarily ... kills any animal,’ ” where state and local officials interpreted the ordinance to ban animal sacrifices during Santería religious ceremonies, but to exempt secular activities such as hunting, slaughtering animals for food, and even using live rabbits to train greyhounds. 508 U.S. at 537, 113 S.Ct. 2217 (alteration in original). The officials’ selective application of the ordinance “devalue[d] religious reasons for killing by judging them to be of lesser import than nonreligious reasons,” causing religiously motivated conduct to be “singled out for discriminatory treatment.” Id. at 537-38, 113 S.Ct. 2217. Therefore, strict scrutiny applied, and the ordinance failed that test because its “proffered objectives [were] not pursued with respect to analogous nonreligious conduct.” Id. at 546, 113 S.Ct. 2217. Because the ordinance in Lukumi gave officials discretion to consider “the particular justification” for each violation, it “represented] a system of ‘individualized governmental assessment of the reasons for the relevant conduct,’ ” triggering under Smith strict scrutiny of the ordinance’s application to religiously motivated conduct. Id. at 537, 113 S.Ct. 2217 (quoting Smith, 494 U.S. at 884, 110 S.Ct. 1595). In Fraternal Order of Police, we held that the neutrality principle applies with equal force when government creates categorical, as opposed to individualized, exceptions for secularly motivated conduct. 170 F.3d at 365. A city’s police department applied its no-beard policy, which was designed to promote uniform appearance, to allow medical exemptions but deny similar exemptions to two Sunni Muslim officers whose faith required them to grow beards. Id. at 360-61, 366. Selective enforcement of this nature, we said, exemplified the Supreme Court’s concern in Smith and Lukumi about “the prospect of the government’s deciding that secular motivations are more important than religious motivations.” Id. at 365. It showed that the police department “made a value judgment that secular (i.e., medical) motivations for wearing a beard are important enough to overcome its general interest in uniformity but that religious motivations are not.” Id. at 366. Therefore, the enforcement of the policy against the Sunni Muslim officers was “sufficiently suggestive of discriminatory intent ... to trigger heightened scrutiny under Smith and Lukumi.” Id. at 365. The Sunni Muslim officers’ beards posed no greater threat to uniform appearance than did the beards worn by officers with medical conditions. Id. at 366. Thus the police department’s policy was void under “any degree of heightened scrutiny.” Id. at 367. Smith, Lukumi, and Fraternal Order of Police point the way to the appropriate level of scrutiny in this case. On its face, Ordinance 691 is neutral and generally applicable. But “[ojfficial action that targets religious conduct for distinctive treatment cannot be shielded [from constitutional attack] by mere compliance with the requirement of facial neutrality.” Lukumi, 508 U.S. at 534, 113 S.Ct. 2217. We must look beyond the text of the ordinance and examine whether the Borough enforces it on a religion-neutral basis, as “the effect of a law in its real operation is strong evidence of its object.” Id. at 535, 113 S.Ct. 2217. Because Ordinance 691 is neutral and generally applicable on its face, if the Borough had enforced it uniformly, Smith would control and the plaintiffs’ claim would accordingly fail. The Borough insists it has done so, but the record shows otherwise. Indeed, the Borough has tacitly or expressly granted exemptions from the ordinance's unyielding language for various secular and religious-though never Orthodox Jewish-purposes. Cf. Fowler v. Rhode Island, 345 U.S. 67, 69, 73 S.Ct. 526, 97 L.Ed. 828 (1953) (holding that city violated Free Exercise Clause by enforcing ordinance banning meetings in park against Jehovah's Witnesses but exempting other religious groups). From the drab house numbers and lost animal signs to the more obtrusive holiday displays, church directional signs, and orange ribbons-the last of which the District Court erroneously deemed irrelevant to the constitutional analysis-the Borough has allowed private citizens to affix various materials to its utility poles. Apart from their religious nature, the le-chis are comparable to the postings the Borough has left in place. If anything, the lechis are less of a problem because they are so unobtrusive; even observant Jews are often unable to distinguish them from ordinary utility wires. While the Borough alleges that the lechis are different because the plaintiffs intend them to be “permanent,” house numbers nailed to utility poles are likewise intended to be permanent. And although the Borough insists that the leehis’ religious nature justifies its decision to remove them, this is precisely the sort of reasoning that Lukumi and Fraternal Order of Police forbid. We believe that the Borough’s selective, discretionary application of Ordinance 691 against the leehis violates the neutrality principle of Lukumi and Fraternal Order of Police because it “devalues” Orthodox Jewish reasons for posting items on utility poles by “judging them to be of lesser import than nonreligious reasons,” and thus “single[s] out” the plaintiffs’ religiously motivated conduct for discriminatory treatment. Lukumi, 508 U.S. at 537, 113 S.Ct. 2217; Fraternal Order of Police, 170 F.3d at 364-65. Just as the exemptions for secularly motivated killings in Lukumi indicated that the city was discriminating against Santería animal sacrifice, and just as the medical exemption in Fraternal Order of Police indicated that the police department was discriminating against religiously motivated requests to grow beards, the Borough’s invocation of the often-dormant Ordinance 691 against conduct motivated by Orthodox Jewish beliefs is “sufficiently suggestive of discriminatory intent,” Fraternal Order of Police, 170 F.3d at 365, that we must apply strict scrutiny. See Lukumi, 508 U.S. at 546, 113 S.Ct. 2217. The Borough nonetheless contends thai three aspects of this case-the plaintiffs use of government property, the lack of e "substantial burden" on the plaintiffs' religious freedom, and the "optional" nature of the eruv-place it outside the framework of Lukumi and Fraternal Order of Police, and thus preclude us from applying strict scrutiny even though the Borougl~ has discriminated against conduct motivated by Orthodox Jewish beliefs. First, the Borough insists that, because the utility poles are on its land, this case is governed by Lyng v. Northwest Indian Cemetery Protective Ass’n, 485 U.S. 439, 108 S.Ct. 1319, 99 L.Ed.2d 534 (1988), which held that the Free Exercise Clause did not prevent the federal government from implementing a decision, based on religion-neutral criteria, to construct a road and allow timber harvesting on 17,000 acres of national forest land traditionally used by Native Americans for religious practices. Id. at 447-53, 108 S.Ct. 1319; see also Bowen v. Roy, 476 U.S. 693, 699-701, 708, 106 S.Ct. 2147, 90 L.Ed.2d 735 (1986) (holding that Free Exercise Clause did not require government to grant religious exemption from generally applicable, religion-neutral statutory requirement that welfare recipients furnish their Social Security numbers where no individualized exemptions were allowed). According to the Borough, the controlling principle is that “ ‘the Free Exercise Clause is written in terms of what the government cannot do to the individual, not in terms of what the individual can exact from the government.’ ” Northwest Indian Cemetery, 485 U.S. at 451, 108 S.Ct. 1319 (1988) (quoting Sherbert, 374 U.S. at 412, 83 S.Ct. 1790 (Douglas, J., concurring)); Roy, 476 U.S. at 700, 106 S.Ct. 2147. Contrary to the Borough’s position, however, the principle of Lukumi and Fraternal Order of Police-that government cannot discriminate between religiously motivated conduct and comparable secularly motivated conduct in a manner that devalues religious reasons for acting-applies not only when a coercive law or regulation prohibits religious conduct, but also when government denies religious adherents access to publicly available money or property. See Sherbert v. Verner, 374 U.S. 398, 404-05, 83 S.Ct. 1790, 10 L.Ed.2d 965 (1963) (holding that Free Exercise Clause prohibits state from devaluing religious reasons for seeking unemployment benefits); Davey v. Locke, 299 F.3d 748, 753-54 (9th Cir.2002) (holding that Free Exercise Clause bars state from making college scholarships contingent on recipients not majoring in theology); cf. Rosenberger v. Rector & Visitors of Univ. of Va., 515 U.S. at 831-35, 115 S.Ct. 2510 (holding that Free Speech Clause precludes state university that pays student publications’ printing costs from denying funding based on publication’s religious viewpoint). In contrast, the principle of Northwest Indian Cemetery applies only when a person of faith asks for special, not equal, treatment in the context of a religion-neutral policy. See Adams v. Comm’r of Internal Revenue, 170 F.3d 173, 181 & n. 10 (3d Cir.1999) (rejecting argument that “uniform and facially neutral” penalty for “a conscious, intentional failure” to file taxes could not be applied to religious objector); Swanson v. Guthrie Indep. Sch. Dist. No. I-L, 135 F.3d 694, 701-02 (10th Cir.1998) (rejecting claim that school district must grant religiously motivated request for individualized exemption from no-part-time-attendance policy where no individualized exemptions were granted). It does not apply when government discriminates against religiously motivated conduct in allocating “the rights, benefits, and privileges enjoyed by other citizens.” Northwest Indian Cemetery, 485 U.S. at 449, 108 S.Ct. 1319. In this case, the plaintiffs are not asking for preferential treatment. Instead, they ask only that the Borough not invoke an ordinance from which others are effectively exempt to deny plaintiffs access to its utility poles simply because they want to use the poles for a religious purpose. Cf. Widmar v. Vincent, 454 U.S. 263, 273 n. 13, 102 S.Ct. 269, 70 L.Ed.2d 440 (1981) (“This case is different from the cases in which religious groups claim that the denial of facilities not available to other groups deprives them of their rights under the Free Exercise Clause.”) (emphasis in original); Davey, 299 F.3d at 757-58 (“This is not a case where a person claims that denial of a financial benefit which is not available to others deprives him of his free exercise rights.”). Therefore, Lukumi and Fraternal Order of Police, not Northwest Indian Cemetery, control our disposition. Second, the Borough maintains that strict scrutiny should not apply because the plaintiffs have not shown that the removal of the eruv would substantially burden their religious practice. Under Smith and Lukumi, however, there is no substantial burden requirement when government discriminates against religious conduct. See Lukumi, 508 U.S. at 531-47, 113 S.Ct. 2217 (finding Free Exercise Clause violation without considering whether a substantial burden on religious freedom existed); Fraternal Order of Police, 170 F.3d at 364-67 (same); Brown v. Borough of Mahaffey, 35 F.3d 846, 849-50 (3d Cir.1994) (“Applying such a burden test to non-neutral government actions would make petty harassment of religious institutions and exercise immune from the protection of the First Amendment.”). Instead, the plaintiffs need to show only “a sufficient interest in the case to meet the normal requirement of constitutional standing,” Hartmann v. Stone, 68 F.3d 973, 979 n. 4 (6th Cir.1995) (rejecting substantial burden requirement), and their inability to attend synagogue on the Sabbath without the eruv easily suffices. Moreover, Smith admonished courts not to engage in the sort of inquiry the Borough demands. The Supreme Court explained that “(jjudging the centrality of different religious practices” violates the principle that “courts must not presume to determine the place of a particular belief in a religion.” Smith, 494 U.S. at 887, 110 S.Ct. 1595; see also DeHart v. Horn, 227 F.3d 47, 56 (3d Cir.2000) (en banc) (same). Evaluating the extent of a burden on religious practice is equally impermissible, the Smith Court said, because it entails a forbidden inquiry into religious doctrine. “ ‘Constitutionally significant burden’ would seem to be ‘centrality’ under another name,” and “inquiry into ‘severe impact’ is no different from inquiry into centrality.” Smith, 494 U.S. at 887 n. 4, 110 S.Ct. 1595; see also Northwest Indian Cemetery, 485 U.S. at 451, 108 S.Ct. 1319 (“Whatever may be the exact line between unconstitutional prohibitions on the free exercise of religion and the legitimate conduct by government of its own affairs, the location of the line cannot depend on measuring the effects of a governmental action on a religious objector’s spiritual development.”); cf. Widmar, 454 U.S. at 269 n. 6, 102 S.Ct. 269 (rejecting distinction between “religious worship” and other religious speech because it would require courts “to inquire into the significance of words and practices to different religious faiths” and “[s]uch inquiries would tend inevitably to entangle the State with religion in a manner forbidden by our eases”). Third, the Borough asserts that the plaintiffs cannot state a free exercise claim because the eruv is an “optional” religious practice. For reasons similar to those counseling against requiring the plaintiffs to demonstrate a substantial burden on their religious practice, we cannot accept the Borough’s contention that courts presented with free exercise claims should, as a threshold matter, determine whether the religious practices at issue are “mandatory” or “optional.” We need not consider whether the Borough’s characterization of the eruv is accurate. Neither the Supreme Court nor our Court has intimated that only compulsory religious practices fall within the ambit of the Free Exercise Clause. To the contrary, our en banc decision in DeHart said that conduct implicates the Free Exercise Clause if it is motivated by “beliefs which are both sincerely held and religious in nature” without regard to whether it is mandatory. 227 F.3d at 51; cf. id. at 54-55 (rejecting contention that, in the context of prisoners’ free exercise claims, conduct based on “religious commandments” should receive more protection than conduct that is “a positive expression of belief’); see also Levitan v. Ashcroft, 281 F.3d 1313, 1319 (D.C.Cir.2002) (holding that, because “[a] requirement that a religious practice be mandatory to warrant First Amendment protection finds no warrant in the cases of the Supreme Court or of this court,” Catholic prisoners could raise free exercise challenge to rule barring them from consuming small amounts of wine during Communion). Further, if the Borough’s position were correct, the Lukumi Court would have considered whether Santería adherents believe their faith commands them to sacrifice animals. But the Court did not do so, instead deeming it sufficient that they had a sincere desire to sacrifice animals for religious reasons. See Lukumi, 508 U.S. at 531, 113 S.Ct. 2217. Additionally, if anything turned on whether a religious practice is “mandatory” or “optional,” courts would have to question “the validity of particular litigants’ interpretations of [their] creeds” and perhaps even adjudicate “controversies over religious authority or dogma,” tasks that are “not within the judicial ken.” Smith, 494 U.S. at 877, 887, 110 S.Ct. 1595 (internal quotation marks omitted); cf. Presbyterian Church in U.S. v. Mary Elizabeth Hull Mem’l Presbyterian Church, 393 U.S. 440, 449-50, 89 S.Ct. 601, 21 L.Ed.2d 658 (1969) (holding that the Free Exercise Clause prohibits courts from deciding church property disputes by resolving underlying conflicts over “the interpretation of particular church doctrines and the importance of those doctrines to the religion”); see also United States v. Ballard, 322 U.S. 78, 84-88, 64 S.Ct. 882, 88 L.Ed. 1148 (1944) (holding that courts can inquire into the sincerity, but not the truth or falsity, of religious beliefs). Finally, if the First Amendment shielded only compulsory religious practices, religions without commandments “would find themselves outside the scope of First Amendment protection altogether,” Levitan, 281 F.3d at 1320, a result antithetical to basic Free Exercise Clause norms. See, e.g., Fowler, 345 U.S. at 70, 73 S.Ct. 526 (“[I]t is no business of courts to say that what is a religious practice or activity for one group is not religion under the protection of the First Amendment.”). As the Borough’s arguments for eschewing strict scrutiny are unpersuasive, we must consider whether its invocation of Ordinance 691 against the lechis is likely to pass that test. 2. Application of strict scrutiny Because the Borough’s decision to remove the eruv is not neutral toward conduct motivated by Orthodox Jewi