We conclude that First Amendment principles, controlling authority, and persuasive precedent demonstrate that a First Amendment right to record the police does exist, subject only to reasonable time, place, and manner restrictions.

Turner v. Lieutenant Driver, 848 F.3d 678 (5th Cir. 2017)

The First Amendment, U.S. Const. amend. I, protects a significant amount of verbal criticism and challenge directed at police officers. Speech is often provocative and challenging, but it is nevertheless protected against censorship or punishment, unless shown likely to produce a clear and present danger of a serious substantive evil that rises far above public inconvenience, annoyance, or unrest.

City of Houston v. Hill, 482 U.S. 451 (1987)