Whether or not Hitler was a good person is opinion, not fact. It's relative to one's personal beliefs and definition of "good." For instance, obviously he had many supporters during his time and did good things for the German people and economy. To us in the West (myself included), and most of Europe (most of the world) he was not a good person, but that is just our opinion. Likewise it is our opinion that Osama bin Laden is evil, yet to his supporters he is not.