In the US, you have to actually have to directly call for violence for it to be a call to violence and for it not to be protected speech. That means prefacing

In the US, you have to actually have to directly call for violence for it to be a call to violence and for it not to be protected speech. That means prefacing something with "I think" or "I believe some violence should happen" is a different statement of expression than "Some violence should happen". In the former, you're expressing an opinion, in the later, you're calling for violence.