Not the psychosocial insight I was hoping for

I was hoping to understand how a group of ‘ordinary’ people slipped, or were pushed, into depravity.

For some insight to that, I could have saved 9 hours and just skipped to chapter 18, However, I didn’t.

Most of the book was an almost ‘administrative’ account of killing. Who did what and where but very little why. Chapter 18 is about an hour long and does provide a little insight.

Clearly well researched, this book had compassion but very little humanity.