[splintercell]

Fire in a crowded theater is not an exception according to the Supreme Court and hasn't been for a while.

Clear and present danger is the standard.

According to the Supreme Court saying that all members of a certain minority group in must be killed, is covered under free speech, but saying that a specific member of that minority group must be killed at 9 p.m. tomorrow night, it's not free speech but clear and present danger.