The New York Times has this narrated presentation of a photo album originally created by an SS officer at the notorious Auschwitz concentration camp during World War 2. It is very well presented and I highly recommend taking a look at it.
Basically it shows some of the daily activities of the senior officers overseeing the horrific atrocities at Auschwitz. What makes it so interesting is that these people seem so “normal” despite the horrors that they were perpetrating. Take a look.
Here are some more examples