I have thought about how in Indiana Jones and the Kingdom of the Crystal Skull, the Soviet Union officials are the villains, but they are shown to be acting in reaction to existing United States weaponry and technology that is threatening their country and government. RedLetterMedia does good job of explaining this in their review of the movie.
However, their main goal is to use the titular skull for mind control against Earth's population.
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Marcos is presented as an absolute sociopath that only uses ideology to further his own goals, and is otherwise abusive and shitty. Beside him the OPA are kinda sympathetic
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Fred Johnson and Klaes Ashford were the best OPA leaders, too bad they dead and Marco "Pol Pot" Inaros is in charge