As a correction to a previous post, it was pointed out that Auschwitz was liberated by the Red Army. True enough, with camps all over Nazi held territory, military units stumbled over them regularly during the closing months of the war. As American and British units began to find some of them, General Eisenhower ordered documentation of the camps. This is the film that was made. It is not easy to watch.
The Germans saw themselves as a civilized people. The pinnacle of all progress. It is a thought to give one pause.