I understand Micca's "chastened", because even though I was not alive at the time, I feel chastened for all of humanity's behavior, for this and other crimes. I can't remember who said it, but someone important said ref. the Holocaust:

"I expected to hear a roar from the Vatican. What did I hear? Silence." of something to that effect. We should all feel chastened when presented with horrors of this magnitude. Man's inhumanity to man is immeasurable.