Like for gods sake people want to cheer when an Antifa punches Richard Spencer or when Redneck Revolt talks about teaching leftists how to use guns or when someone drops a Malcolm X quote.
But when these people, who are ALREADY SOCIALISTS/ANARCHISTS/COMMUNISTS display a hammer and sickle then my god they're just as bad as the Nazis they're fighting!
No one reasonable wants anything to do with either of you.
Sure, you're somewhat better in that you want to bash the Nazis, but that only affords you so much...
We all know what kind of world you want should you find support and success, and it's not a place most of us want to be.
edit: as an aside, I just became aware of the word Antifa the other day and I already absolutely loathe it.