That's a bizarre distinction. Do you think antisemitism began with advocating criminal activity? Antilocution is the first stage on the spectrum of hatred, it creates an other which it's ok to hate, ok to dehumanise and take rights away from, ok to segregate, and ultimately more and more ok to physically hurt. The hate speech adjusts, by its nature, what is criminal. If you don't see how rhetorical hatred leads inexorably to violent hatred, I don't think I can trust your assessment that people will simply ignore this speech like it's a restaurant they don't like.