OK, then you are in fact an advocate of violence against speech.
Someone who is not an advocate of violence against speech would not advocate violence for anything X might say.
In the future you should not claim you aren't an advocate for violence against speech.
Yeah, and now we get back to the point where you are attempting to tar political opponents for holding fairly universal positions that are unambiguously ethical.
Free Speech is not yelling fire in a theater, nor is it to invite a mob, nor is it to conspire to commit an unethical act, nor is it a great many other things.
What if the sign is held in front of a cop, and says "I've got a gun and I'm going to shoot you if you turn your back on me!" Would this be justification for the violence of detaini g them, forcing a search of their person, and arresting them with all necessary force?
You seem to be unable to comprehend that you are fighting a losing position: some speech invites a direct response.
Edit: Don't worry though. I can wait right here while you go ahead and shift those goalposts of yours...