I wouldn't say its lazy. Fasicm used forcible suppression of opposition and differing opinions, no? Same can be said, as I've stated, by Antifa. Violence aside, Antifa screams at anything that doesn't fit their narrative by throwing around heavy identifies at people who oppose them, also a common trait of fascism, right? It's not just violence, but its also the suppression of opinions. Think when the Ultras chanted against the normal fans...they weren't happy they normal fans weren't in lockstep with the Ultra's views. So, to me its ironic in Antifa's case to be "anti-fascist" when all they do is seem to support some of those tendencies they claim they are against.
Antifa screams hypocrisy. Ultras do too when they bitch about high tickets costs but commit crimes for monetary benefit. (i.e. corruption, weapons sales, extortion, etc).
I will say the Ultras resemble the mafia more than anything, they are well organized. Antifa probably only uses facebook to organize their little nerd protests. I'd also agree that Antifa are definitely much closer to anarchists than anything else.
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Antifa is also against liberal democracy. Am I wrong in saying fascism preferred dictators/authoritarian figures in charge? Possible to draw parallels there why or why not?