I meant to reply yesterday but I got distracted. I have a pretty large bias against nazis / white supremacists and fascists. Unfortunately, on the fediverse, we're not going to be able to "out now!" them at the door, simply because we're not going to be able to tell if they're sitting behind their keyboard (or phone) wearing a vest with iron crosses, nor will we be able to tell if they have either red or white laces in their Doc Martens.
I think that posting content (or in support of content) that falls into the categories you mentioned should equate to getting the boot though.