Mike, I think you're missing my point. The freedom of speech we hold dear refers to constructive discourse regarding our government, without fear of retribution by the government. Its aim was certainly not to blanket your impulses to say what you want, where you want.
As it is a crime to yell "Fire!" in a crowded public place, any words or phrases said with intent to incite others, weather or not it is a deeply held conviction, should be treated the same.