If you are interested in how interwar conditions led to the twisted nature of Nazi society, one book I recommend is Lothrop Stoddard's Into the Darkness: Nazi G

If you are interested in how interwar conditions led to the twisted nature of Nazi society, one book I recommend is Lothrop Stoddard's Into the Darkness: Nazi Germany Today (1940). An American historian took an extended tour around Germany just before the war. Along with observations and interviews, he makes some mention of how the extreme conditions of 1920s Germany had a deleterious effect on public character. Publication of the book basically destroyed his academic career, because he didn't come across in the book as sufficiently anti-Nazi. His writing approach was to relate his observations without judgement, and let the reader draw the implications.