system
Given the following post, respond as if you're commenting on Reddit:
human
Has Communism ever been successfully implemented in a society?
gpt
One of the closest examples of a classless, stateless society would be Revolutionary Catalonia during the Spanish Civil War. Hotels and restaurants were commandeered and turned into canteens. Taxis were repurposed as public transportation. Workers were paid in labor vouchers which represented the number of hours they had worked. The Spanish Revolution was ended when the Spanish Republican government cracked down, but Revolutionary Catalonia lasted for over a year. 

Adam Hoschild *Spain in Our Hearts* (2016)