they're not an organization. it's just a loose association of people who generally don't even really know each other (mostly leftists) who oppose fascism at all costs, which is respectable.
the black bloc is fuckin stupid and bad optics to go around tipping over trash cans and shit, but pressure from antifascist forces has successfully gotten like 50 fascist rallies canceled, so i'd say it's been pretty goddamn successful.
the harder it is for them to hold a rally, the harder it becomes to recruit.
charlottesville was extremely publicized and pushed into the mainstream, but almost every rally after that, nobody reported on it because it was just the same story. everybody stopped talking about the conflicts, so it stopped being a valid argument that "antifa are just giving the fascists more publicity and empathy in the public eye"
the more we can publicly reveal each group's actual aims, the harder it becomes for them to conceal the purpose of their group and effectively indoctrinate people who have no idea what they're getting into.
when you join a group that's like "traditional values" but when you go to their event, people call you a nazi and punch your fellow group members, it makes you consider what could possibly be wrong with this group, why would people be this hostile towards a group that's allegedly just about not masturbating or whatever.
it makes it a lot more difficult to herd the sheep into right wing extremism, so to speak.
so it's a good thing. anything that can at the very least slow the rising tide of fascism in this country is fine by me.
people generally don't understand that 99% of the work is behind the scenes; most people who would consider themselves "antifa" have never fisted a natsee, and many people who have fisted natsees don't consider themselves "antifa"
check out this video if you'd actually like to learn about the philosophy of antifa:https://www.youtube.com/watch?v=bgwS_FMZ3nQ