Some starting points here: https://en.wikipedia.org/wiki/Free_speech_zone#Notable_incidents_and_court_proceedings https://en.wikipedia.org/wiki/Free_speech_zone

Some starting points here: https://en.wikipedia.org/wiki/Free_speech_zone#Notable_incidents_and_court_proceedings https://en.wikipedia.org/wiki/Free_speech_zone#Notable_incid... First amendment entanglements with trespass generally occur on public land where some local authority has prohibited some sort of activity involving speech. There usually aren't first amendment issues to be raised with trespass of private property, as rights are relevant with respect to government authority.