It's only related to what he wrote but it reminded me of something that low-key annoys me whenever I hear Americans talk about the Holocaust.

I know he only touches on it very slightly and indirectly raises a related point to what annoys me about most coverage about it.

It's pretty simply that the people that were systematically slaughtered during that time period were classified to be Jews, Gypsies and other "undesirables", but they were first and foremost German and identified as such. Nazi Germany didn't kill "other" people, it systematically alienated groups of the population to then eradicate them, by first walling them off to make communication impossible, then spreading enough propaganda to make the average Joe no longer consider them his neighbor.

Seeing the social climate all over the world change, chief among them Americas, does make me think this lesson hasn't been taken in whatsoever.

The first step to atrocities is always to cut of communication between the groups, and people nowadays are actively doing that themselves now - not artificially enforced like it was back then.