Taking the allegations of the complaint as true, as the Court must when ruling on a motion to dismiss, the plaintiffs have plausibly stated a claim under 42 U.S.C. § 1983 for First Amendment violations by Arlington County and District of Columbia officials. According to the complaints, the defendants used force, without warning, to break up a crowd of peaceful protestors who were exercising their First Amendment rights in Lafayette Square, a historic and quintessential public forum, Doe, 968 F.2d at 87, which provides a unique situs for the exercise of First Amendment rights, A Quaker Action Grp., 516 F.2d at 725. As alleged, the defendants prohibited all expressive activities in Lafayette Square without any basis at all; they left open no alternative channels; and they forcibly dispersed protestors because of the plaintiffs exercise of their protected First Amendment rights. Reasonable officers would have known that such alleged actions violated clearly established law. Thus, the plaintiffs claims for damages against the Arlington County and D.C. officials survive the motions to dismiss.