I remember in middle school my school brought in some guy that was supposedly either a kid during the Holocaust that was in a camp or in a camp as an adult and it was straight up gore porn moment after gore porn moment described to a bunch of 9-12 year old kids who were fresh off hearing the one side of history never to be questioned (just finished reading Night by Ell Wiesel.) I remember him stating something along the lines of him supposedly watching people be lead to and die in some death ditch or trench to be shot and fall into. It was almost as if they needed to traumatize the kids with the most outrageous story to make sure it is attached to their emotional psyche permanently, so whenever someone brings up a dissident opinion, an emotion is triggered immediately. It was messed up and I still remember how uncomfortable it was to sit in there and listen to it.