A fundamental principle of the First Amendment is that all persons have access to places where they can speak and listen, and then, after reflection, speak and listen once more. The Court has sought to protect the right to speak in this spatial context. A basic rule, for example, is that a street or a park is a quintessential forum for the exercise of First Amendment rights. See Ward v. Rock Against Racism, 491 U. S. 781, 796 (1989). Even in the modern era, these places are still essential venues for public gatherings to celebrate some views, to protest others, or simply to learn and inquire.