Only if you regard the putative object of the violence as human. If you are inciting violence against alley cats or cockroaches, it is still free speech. And if you are positing that Jews, Blacks or the Chinese are subhuman, that would be free speech, but free speech for the purpose of being allowed to incite violence against them, based on the proposition that they are an inferior species. That’s how the Nazis did it, and what differentiates a mere nationalist, asserting the legitimate prerogatives of nationhood, and a Nazi. I’m just waiting for the Harv-tards to articulate that “free speech” hypothesis. They’re supposedly smart.
What about positing, not that they are subhuman, but evil? Scholars have been positing that Christians and whites are evil for several decades now. Not at campus protests, but as official classroom lectures.