instigating violence and crime has never been protected, although the definition is quite strict
free speech rights don't cease because someone starts to have reach and they has NOTHING to do with perceived outcomes barring very specific scenarios
that's called being a human being and making your own decisions for better or worse
it's a concept far more important than anything in the immediate and when you kill it, you lose not just that but democracy and a free society as well
you can't have a democracy without legitimate participation by all citizens
you can't have science either or even truth
you lack a historical perspective and you can't imagine just how horribly wrong you are
I suggest you read Kindly Inquisitors before the expedience of the moment takes you on an even darker path