hitler nazi flag

"The Gestapo didn't recruit itself."

Nazis + Brown Shirts = Antifa

Fixed it for you!

But isn't that anarchism?

Yes, anti-fascists are usually the ones who run around rioting, looting, burning, and breaking storefront glass.

But they are most certainly not "Nazis" (actually called National Socialists).

Depends on if they are trying to enforce a creed.

Except Nazis were exceedingly top-down in terms of governing, Hitler being rather well known as something of an autocrat.
Antifa - the version then and the new one now - is bottom-up, grassroots, diffuse, Anarchists & Communists. They don't even qualify as Brown Shirts, as the latter had their allegiance to Hitler, Antifa, against.