Yes. Read it. "Ordinary Men" is one of the most chilling things I have ever read.
Of particular interest was the ordinary guy who blew off a little girls head with a K98 at five feet,, puked uncontrollably, AND WENT BACK TO KILLING THE MOTHER. And father. And the rest of the line up. After a while, it became just a job. These guys started out as train guards, and roundup police for the trains. Then the Einstatsgruppen got over worked and needed help. So they sent the police reserve.
The thing that makes the book so interesting is that almost all information relating to the holocaust is from the victors perspective. So we get a lot from the victims, which has the effect of us envisioning the murderers as a stereotypical nazis, grouping them into a easily identifiable "Not Us", "never happen here" "other" category.
The nazis , understandably, tried to get rid of the records. IIRC, the info the author based his book on was discovered lost in the basement of a Bavarian police station, and found it as he was researching info for something else.
This book, above all else, was what convinced me that, Yes, it really CAN happen here. Like most, they just did their jobs, did what they were told, no different than most of the worlds population. And we do not, anymore, have a ethic of the rugged individualist- the woodsman, the cowboy, ride tall, shoot straight and speak the truth, the scouts motto, all so old fashioned, if known at all.
All the malleable subjective "truths" taught now is make compliant little potential killers.