[smsm42]

The speech that advocates breaking the laws, but does not lead to immediate lawless action is already protected. I.e. if you say "hey you, I order you to take this gun and kill X!" then you're in trouble. But if you say something like "moral imperative declares that X should be killed" (and it's not a coded signal for an assassin but a genuine moralistic argument not intended to cause any specific action) then it's protected. That's why, for example, people marching through Oakland shouting "Death to America" were doing it in complete accordance with the law.