Earlier quoted context omitted.
We don't have to wait for the massacres and wait for the accusations. Inciting rhetoric can be defined. "Go kill them" is already illegal rhetoric. Why isn't "Get your guns and be ready. Something is happening. We are at war. They're coming to kill us." Violence, other than in direct physical self defense, should be the exclusive domain of the state.
That second example isn't "inciting violence", that's self defence! This should be obvious but how does your law work in a situation where, in fact, there is a war and there are people coming to kill us. Or are you naively believing that we live in some sort of utopian post-conflict era, in which self defence against armed groups will never be necessary?
Self defense is legally defined. It's not about a general fear of future outcomes. It's about preventing immediate physical harm. If you're urgently telling people to defend themselves from someone not even in the room, and is actually just a description of a group of people, then that's not self defense in any meaningful way. That's also incitement of violence.