We know that we are not collectively guilty, so how can we accuse any other nation, no matter what some of its people have done, of being collectively guilty?
I know I am not only the bad conscience of the Nazis. I am also the bad conscience of the Jews. Because what I have taken up as my duty was everybody's duty.
The history of man is the history of crimes, and history can repeat. So information is a defence. Through this we can build, we must build, a defence against repetition.
The schools would fail through their silence, the Church through its forgiveness, and the home through the denial and silence of the parents. The new generation has to hear what the older generation refuses to tell it.