Yes, unfortunately.
My father saw Dachau not long after Liberation, one of his high school classmates was one of the officers who actually liberated the camp.
There was an American Indian officer who was involved with that effort. When he saw what the Germans did to those people he lost it and ended a bunch of the Germans. Only thing that saved the officer, I am told, Patton stopped the process.
I was also thinking of Rwanda. The U.N. knew what was coming as well as Clinton’s state department yet they did nothing and no one knows for sure what the actual death toll was from that genocidal massacre.