My first exposure to ANTIFA came after Charlottesville when I heard them described as anti-Nazi. I fully support that idea of course, but a year or so later when they assaulted journalist Andy Ngo and a bunch of other people (there's a thread about it somewhere, but here's a link:
https://reason.com/2019/06/29/antifa-andy-ngo-mob-milkshake-violence/) my support dropped to zero. I'm not a fan of Mr. Ngo, but violence like that is totally unacceptable, no matter what the "cause".
I'm not a fan of the Democratic Party, but I'm a fairly staunch lefty and have been vociferous and adamant about "my side"
not adopting the same tactics of those I oppose. You could see a lot of mis/disinformation tactics being used during the Democratic primary which was really disheartening but totally predictable. "The end justifies the means" is the slipperiest of slopes and how we ended up with Trump. If the left adopts the same ideology then the distinction becomes meaningless in my opinion and I'm out.