Trust me, no German of my generation will ever need to be reminded. We took on the guilt of our fathers for many years, and the whole era between 1933 - 1945 left an indelible mark on us. To the rest of you I say: "don't ask yourself how could they do that?" but rather "How could we do that?"
We, the Germans of my generation, will never, ever trust humanity to automatically do the right thing again! All it takes is
a) unsettled times and
b) a populist who is a good orator who can whip up the tempers, and speak to the deepest fears of the masses, to bring them to a boiling point! Maybe Jan. 6th might be a good example?
Regrettably that kind neighbour of yours, whom you got along with so great before your regime changed, can now inexplicably betray you for having said something that doesn't agree with present sentiment.
I wish this were a cynical and unrealistic view of humanity, trouble is I have seen the land of Bach, Beethoven, Goethe, Schiller, Nietsche, Kant turn into something unworthy (to say the least) of its history.
And if it can happen there it can happen anywhere, as it already did in Rwanda, Nigeria, the Congo, the Sudan, Yemen, Cambodia, Kurdistan, China, present day India (Hindu vs. Muslim), Iran. etc.!
These people are NOT savages but normally kind and civilised folk, but hatred is a disease that can spread all too easily and infect the "Naked Ape" almost overnight if given the right climate.
Sorry, for getting preachy in a light hearted group but I had to say it!