Not what I thought it was

I was looking for methodologies and social influences which convinced people that doing evil was acceptable. This is not that book.
This book describes the atrocities and horrible actions committed during the Holocaust. Interest at points, but ultimately a book about how and how many people were slaughtered. And by ‘how’ I don’t mean epistemology or reasoning, I mean execution methods and decisions.
Again, not what I was looking for.