Are stormtroopers good guys or bad guys?

Answer 1

If you mean Nazi stormtroopers, I would say they were mostly bad. Every soldier is bound to follow the Rules of Warfare. One big rule is that non-combatants are off limits to violent treatment. The thinking being that if your enemy discovers brutal treatment of indiginous civilians in your area of occupation, they may be likely to subject enemy civilians to brutal treatment as well. The same goes for POW's. Another rule is that soldiers are bound to disobey unlawful and amoral orders. The issuing officer is to be arrested and the next in the chain of command take over. It doesn't wash to say after murdering civilians or prisoners that you were only following orders. Your life may be put at risk by refusing to murder non combatants, but it's what you are expected to do.