Communist and Socialist governments were a popular vehicle for getting poor people to join an uprising in the 20th century and despots took advantage of that.
Maybe that's a distinction without a difference given that we've never really seen a non-authoritarian communist government. But communism has only been around for a century, so it's not out of the realm of reason that there'll be a Communist government that isn't brutal at some point. We certainly have somewhat Socialist governments that treat their people well right now.