but violent protests don’t contribute

There is no alternative to fighting fascists with violence. You can’t have a nice talk with someone who is gunning down Jewish persons. You just shoot them in the face.

Someone supports fascists who want to genocide a group of people? Burning down their car is less than they deserve.

I invite you to learn more about the holocaust. The suffering cannot be put into words. There is no means too drastic to prevent something like it to ever happen again.