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.
This really comes down to where you live and who has members. Communist orgs in the states are incredibly small. I’ve worked with at least a dozen and I’ve never encountered a branch with more than 10 active members.
And also it seems standard that American communist org branches have a high degree of autonomy compared to something like more robust national parties in other countries. So one branch in one city might be full of cool folks and a branch of the same org elsewhere might be full of doofuses. That’s just how it goes sometimes.
Best way for you to figure out how to get organized is email/call orgs and see which ones have branches in your area and figure out which one you feel most comfy with.