Tila Tequila thinks so. My first thought was, of course not. But that’s just popular prejudice. Thinking about it further, if he thought what he was doing would make the world a better place, wouldn’t that justify it? After all Bomber Harris probably killed a million civilians with no benefit gained at all, but isn’t normally condemned. Or, for that matter, the individual soldier who kills one of the enemy.
So, the first question is, did Hitler really think that the world would be a better place if he achieved his ends, wiped out the Jews and the rest, and conquered a large part of the world.
The second is, would that justify the actions taken. I suppose the question is, if you honestly believed the existence of Jews to lead inexorably to the enslavement and diminution of mankind, wouldn’t it be your duty to kill as many as possible?
Obviously he didn’t actually do good, but we can’t issue moral judgements against people who thought they were doing good on the basis of their ignorance or delusions. Hence the laws of insanity, you can’t be held responsible for your actions if you don’t know that what you’re doing is wrong.