This book takes apart Nazi Germany theology in a more bitable sense. Like it really gets into the Nazi mind. It does share comparisons to today’s rise in fascism ideology, though its main focus is on Germany and its surrounding countries. 
This helped get the statistics across. Specifically the us versus them now feels more understandable of how something as (dumb) as that sounds worked for Hitler.  I learned more about how that worked. The same with how gender independence was seen as an attack on Aryan purity. Blows my mind how this happened then, though I now feel more knowledgeable on the how it got there.