No person pays for this board in taxes, it is not part of any government, it is not even available to the general public as they must have specific tools to reach it. You have the right to be as obnoxious, inconsiderate, annoying and generally crazy as long as you do not impose economic or physical harm.
But when do you walk into another's home or business and disrupt and prevent the pleasure and learning of others? It is unfortunate that one of the responsibilities of the right of free speech is not written as being polite and perspicacious. There is the downside of bipolar disorder due soon.