I'm not a World War II buff. I know a little bit about it, I was taught the other side of the story in school, so it was unfamiliar to me, the idea of a German resistance, and yet it was considerable.
And lest we get on our high horse and think this is unique to some other place, remember that during the Crusades and the Inquisition, people committed terrible deeds in the name of Christ. In our home country, slavery and Jim Crow all too often was justified in the name of Christ.