Are you

serious? Please for the love of god don't tell you me are looking for information exonerating Hitler for all his evils. Well, there could be the part where he killed 12 million people, or it could be that he tried to entirely eliminate a race of people, or perhaps it is because he invaded all of his neighbors. It's really hard to choose just one reason. As for how he was compared to Stalin? It's like looking in a mirror except Stalin tried to kill everyone with no rationale behind it, Hitler at least explained his actions. Compared to Roosevelt and Churchill, they were pretty much polar opposites in everything, even in their personal lives, Roosevelt and Churchill were alcoholics, Hitler never drank. What's that say about the "evils" of alcohol?