This and everything discussing hitler being evil should be titled "Hitler, he's evil because he lost!" because really that's the truth. When compared to someone who did similarly horrible things (Alexander the Great) Hitler's not that bad, except he didnt succeed in what he set out to do, so history is written by the guys he was trying to kill, painting him as evil. Just think, Alexander the Great, wiped out whole cities women and children included simply because they didn't move away from a couple horrible people living there, he invaded and decimated the leadership of over 100 nations, he even oppressed his people, making his generals kiss his hand, a thing considered horribly humiliating to the Macedonians. Inspight of all that, he's Alexander the Great, why? Because, Alexander succeeded in what he set out to do, and his people got to write the history on it.
Hitler wasn't the worst person to have ever lived, he just landed on the wrong side of the win/loss equation.