People tell me I shouldn't support the Empire because they're Fascists. Like that's exactly the reason why I support them.

Well, people generally take it as read that you shouldn't support fascists in the first place. But you've made yourself clear on that so.

Unless the Space Nazis from outer space were simply misunderstood and having a bad day because of it while the baddies sought chaos over discipline and even duped Mr Bid Bad Wolf into killing the Emperor because people simply don't appreciate nice things,,,

The movie you are describing is called Iron Sky and it was awesome.