As DannoHung said, a lot of the nazis genuinely believed they were the good guys. Obviously what they did was horrible, but the point is that you have to assess

As DannoHung said, a lot of the nazis genuinely believed they were the good guys. Obviously what they did was horrible, but the point is that you have to assess the actions of a group like that keeping in mind that it's just composed of a bunch of individual people. And people can be persuadable, stupid, and not very far along in their ethical development (especially the very young people who are enlisted to fight). When you consider how malleable the human mind is it's hard to take terms like "good guys" and "bad guys" seriously. Everyone grows up in their own environment, with their own perspective and traumatizing experiences. There are many people around the world who see the US as the bad guys, even though I think our intentions are noble and we obviously don't go around systematically murdering millions of people as efficiently as possible because of what they look like. If you just mean "bad guys" to describe a group of people doing unethical things, then I agree with you but I disagree with the phrase. It just makes me think of little boys playing cowboys and indians. It's not a very thoughtful phrase.