I'm merely saying it's not hard to draw a line from there to our current state where we've found our ultimate inexcusable evil in the form of Nazis and the Holocaust.
We've created the perfect "bad guy" to fuel our need for a good vs evil narrative in which we can justify all our evil actions by acting for the "greater good" because we are the "good guys", we won! Remember?
Conveniently it's exactly that kind of mindset which allowed the Nazis to do what they did, they told people it was for the greater good and these Jews are the bad guys and they'd need to do bad things to win against these bad guys.
It's not like SS officers thought to themselves "Yay I'm such an evil person, I just love killing people, it's so much fun!", only very few humans are actually broken like that.
In the same way, no normal human being willingly tortures other people, you need to give them a bigger cause, like protecting their country from evil terrorism, to give them the motivation to get over their consciousness.
Maybe I'm naive, but I simply don't think there's such a thing as "evil people" or "good people", there are just people. A few of them might be very broken but still smart enough to manipulate many other people, but they don't represent anything or anybody but themselves.