A little lesson in the Constitution for our lesser learned friends...
Freedom of speech is what prevents the government from throwing me in prison when I post, "Obama is a worthless piece of crap!"
However, if the Administrator is an Obama supporter, they are perfectly within their rights to ban the crap out of me.
That which is granted to us by the Bill of Rights restricts the government's actions, not the private citizen's.
If I come into your home and lecture you according to my beliefs in God, Satan, and all things supernatural, I may be practicing my free speech, but you are not infringing on that free speech by kicking me out of your home because I can always go spout that crap elsewhere.
Freedom of speech does not equate to freedom from consequences.