- Yelling fire in a theatre

- Calling Bush Hitler

- Saying that it is a war for oil

- Saying that Sadam needs to be released

- Saying that if a dictator provides food for his people, then they like that dictator

- Saying that it is Bush's fault that Iraq is a terrorist breeding ground

- Burning the flag and stomping on it

Actually, I would say that most of those things are worse than yelling "fire" in a theatre.