If the United States of America has freedom of speech in their First Amendment... then how could this happen?

a href="http://www.youtube.com/watch?v=OsaEvLlHjWg&feature=BFa&list=PL6195D8600DD0A713&index=10" rel="nofollow"http://www.youtube.com/watch?v=OsaEvLlHj…/a