Oh, that's definitely there as well, but I felt like the primary target of the satire was the futility of military enforced classicm, like that which is taking form in Iraq. And to be fair, the war (and war in general) is inextricably tied to the division between classes, negated mobility from class to class, and the distant division between classes.

Land of the Dead is hardly a Marxis parable though. Communism, after all, is just a red herring.