I dont think its hard to empathize with nazis. I can understand why they do what they do and how they came to their beliefs. I would even go as far as calling some of them victims like you would call scientology members victims. At the same time i can be of the opinion that their belief set is incompatible with the world i want to see and that rehabilitating them is out of scope.

Having empathy doesnt mean allowing people to trample over you.