they can always stop being Nazis

I think that's something a lot of right wing people struggle to comprehend.

Left wing violence is targeted toward those who would do us harm, i.e. Nazis. It's self defence.

Right wing violence is targeted toward those who they believe is causing harm. In their minds it's the same justification, self defence.

The difference is you can choose to be intolerant or not, you can choose to treat others with kindness or not, you can choose to be a Nazi or not. You can't choose whether you're gay, black, trans, disabled, Jewish, whatever form of "other" they have chosen.

Obviously there's also the fact that being "other" isn't harmful in any way. But that's a separate rabbithole of delusion that needs tackled.