Do you really? Then you call the police. The fact that these topics can't be discussed without escalation to violence (or people assuming it will lead to violen

Do you really? Then you call the police. The fact that these topics can't be discussed without escalation to violence (or people assuming it will lead to violence) should be troubling to everyone. In the free market of ideas, you win or lose by the merits of your ideas. If you're just spouting racism and bigotry then you will lose, and everyone will ignore you. But even then, there's no need for violence.