I don’t think I’m educated enough to say anything against the group as a whole, as I haven’t sat down to do a lot of research on them (I’m realizing now that my comment was made from a BS bias that I had picked up from when I was a conservative).
You should do more research :)
Unless you're talking about this one, referring to "the antifa organization" makes as little sense as saying "the conservative organization". There are many organizations with variously overlapping goals and strategies for achieving them, but there hasn't been a singular "antifa organization" since 1933.