My professor (disappointingly) couldn’t answer this without going into Cold War rhetoric (albeit thoughtful rhetoric): what makes Fidel Castro a bad person/the enemy? Better yet, is he a bad person? Even moving away from him as a person, why is his government bad? It is because the people under him have fewer political freedoms than we [think we?] do?
It’d be nice to hear an answer from someone in my generation that hasn’t merely imported popular belief.