> The reality is a minority of people were willing to use extraordinary violence and propaganda to present their viewpoint as "normal," but I don't agree that that made it "normal" even for the times.
Before modernity, extraordinary violence and propaganda were, well, ordinary. Hitler just made that work on industrial scale, but the underlying moral ideas weren't anything new. During antiquity, people didn't mind slaughtering entire cities. Even more modern history is full shit like that, look up Mongol invasions.
BTW don't you think that it's a little awkward that in modern times "pirates", which were people that'd literally kill seamen for profit, are considered a fun Halloween theme for children? I can imagine that in 500 years Nazi costumes will be similarly normalized.