As the spectator, you get to determine who is the bad guy. A classic example in The Lion King. Mufasa the bloodthirsty king succeed, despite his assassination, in maintaining the order he lived, and killed, for. Meanwhile, his mistreated brother, failed to create a new better order by liberating the oppressed hyennas. Simba had a fair chance at changing things for good after he met Timon and Pumbaa who teach him the true way of life but by the end he has forsaken everything he learned and we see a completely brainwashed Simba accomplish Mufasa's biding.

Or you can watch the movie the way you are told and in this case you are right.