You may have Godwined the conversation but it's probably justified. Except it's not nazis, but more likely fascists (though the distinction is probably pretty moot if you live there, but I doubt we're going to see industrial death camps (you need math and chemistry for that)).
Why fascists? Because their social composition is made up from the same type of loser. The people joining ISIS are not, in the main, very successful with their lives. Petty criminals, dropouts, etcetera. And ISIS gives them the chance to become part of something larger, where they can say "Fuck you, I may not be good at math - but you know? We'll just BAN math!".
They can rape and loot and mutilate as much as they want, without sanction. They don't have to listen to all those people who have more power because they are whiter, or smarter, or richer, or all of them combined - they can just grab a gun and feel power in their hand. It's the old attraction of the small worm aspiring to be a big dragon.