One time on the History Channel, back when all they did was WWII documentaries, they showed a clip of Hitler happily playing with his dog at his summer home. Before I realized was happening, I exclaimed, "Awww!"
Nazis are people, too. This is not a positive statement about Nazis or humanity. We all have the capacity to be evil fucking sociopaths. If you delude yourself into believing that Nazis cannot be polite, sympathetic, eloquent, or whatever positive attribute you ascribe solely to the morally righteous, you're going to get taken for a fucking ride by the first ideologue with a charming smile or a convincing sob story.