The libs will just say, “communism is wonderful but the wrong people were in charge. We’ll do it right.” Isn’t the definition of insanity trying to do the same thing and expecting a different result?
Just tell them, “Fine, I’ll support you, as long as it gets to be ME who is in charge, not you.” See if they agree to that. If not, announce you are forming a splinter party of the REAL communists, and declare them all capitalist running dog lackeys.