You could also make the case that the Old Republic (at the time of the Clone Wars) was also evil, since they were cranking out clones to fight and die for them while having very few citizens risk their lives. And the Jedi were evil for being complicit in that (along with being generally decadent and incompetent). I expect the Death Stars qualify as military targets, so you have to go into the Expanded Universe to note that the Rebels sponsored privateers to really show that the Rebellion was evil. So the real challenge in the Star Wars universe is finding a faction of true good guys!