Try an experiment. Walk into any large public, non-government building or walk into a rally. Make as large a disturbance for as long as possible. You will learn the legal limits of your actions.
This is old stuff from the 1960's. Growing beards and long hair doesn't make an eye blink today. So the last attempt to make a splash is to act like a two-year-old and blame everyone else for not letting you do it in public.