I'm not trying to be a dick… but I've never seen that flag used by Antifa. Is this one of those, "ya know, that one time", kinda things?
I don't think Antifa wants to toss Jews/Bolsheviks/Marxists into ovens. I think Antifa are Jews/Bolsheviks/Marxists and/or under Jewish/Bolshevik/Marxist leadership.
I don't think Antifa is fighting for the demographic-security of whites, either.
You don't need to convince anyone that "Antifa are the real Nazis" or whatever your angle is here, to get us to hate them. We already hate those commie-pukes and have for some time.
Also, little history lesson… The communists (which you now call "Nazi-fascists"), most certainly won WW2. (The American people won nothing). Theodore Kaufman's outline for Germany's extermination in "Germany Must Perish", was executed in near flawless fashion. (The German people won death). But the "Nazis" made out like bandits didn't they?… Yeah… The AshkeNAZIS.