That relates to my post a while back today. You remember when polish far-right politican Grzegorz Braun used the fire hose on the Hannukah candle in his actually antisemitic public outrage?
I've seen a lot of people back there laughing he's just mentally ill and deranged. Thing is, he's not. He's perfectly sane, just bigoted as fuck.
The thing with bigots, religious fanatics, fascists and Nazis alike is that they are fully aware what they are doing. Sure, they can be blinded by hatred or prejudice, but other than that they're perfectly fine.
What's truly scary about them is they are usually quite normal - they won't treat you like shit if you're not in the group they despise for any particular reason. But they are monsters, just hiding it.
Please don't replicate the rhetoric that they are mentally ill. People suffering from mental diseases have it bad already. They don't need to be associated with literal Nazis. Do the world a favour, don't be ableist and punch Nazis when necessary not because they are mentally ill, but because they are, well, Nazis and they are dangerous to your friends.