There seems to be a lot of opinions floating around, and PSL members seem particularly vocal though I’ve heard some rumblings of SA from leadership.
Because of the constant risk of CIA infiltration I know all orgs need to be justifiably paranoid, though I’ve no idea if any are completely CIA captured. If any are I’d assume it’s CPUSA because of their prominence.
At first glance the RCA seems interesting (Edit: misread something earlier, fuck them Trots) but I don’t know enough about their OpSec yet. That’s why this seems a really valuable question to bring to the community. In theory I’d want to join one I can join under an alias in case of infiltration.
It depends on where you live and what the local chapters are like. I’d try going to whatever public events each of them has and talk to a few people, see what the vibe is like, and see what they’re doing. For example, if you want to do tenant organizing and PSL is the only org doing that in your city, then join PSL.
BTW keep in mind that becoming a full member of PSL is about a year-long process. To join DSA you just need to pay dues and send an email. Other orgs are somewhere in between.
Also recommending the PSL, but if you don’t want to take the commitment of becoming a full member, the PSL Action Network is a lower-commitment option.
The SA controversy IIRC refers to someone who was investigated and stripped of their membership for their actions.