Okay, so I’m probably gonna get downvotes for this, but I believe forced labor is anticommunist. Explanation: Communism/Socialism is about the workers seizing the means of production. Forced labor means that people are forced to work in a mine/factory/some other place with little pay. That does not sound very communist to me.
Communism is about reaching automation so that we dom’t have to work anymore, that is why IMO you can’t abolish social classes without it.