The concept of having 'free speech zones' where political speech is allowed is ... very inherently political though.

https://en.wikipedia.org/wiki/Free_speech_zone

Civil liberties advocates argue that free speech zones are used as a form of censorship and public relations management to conceal the existence of popular opposition from the mass public and elected officials.[24] There is much controversy surrounding the creation of these areas – the mere existence of such zones is offensive to some people, who maintain that the First Amendment to the United States Constitution makes the entire country an unrestricted free speech zone.[24] The Department of Homeland Security "has even gone so far as to tell local police departments to regard critics of the War on Terrorism as potential terrorists themselves."