This betrays the ethnocentrism of the primitives; they don't know, and don't care, what happened in parts of the world not theirs. When Europeans were dong all these terrible things so long ago, other peoples in other places were doing the same thing, if not worse.
I seriously doubt any of that is even taught in schools these days.
Primitives are indoctrinated in the belief of moral equivalence. We're not allowed to dislike, criticize or show outrage towards anything Muslim Terrorists, Communist dictatorships psycho lunatics or murdering thugs do because of things that happened in our distant history.
Hence the reason they always find a way to say "oh yeah well look at what the U.S. did" in any discussion that comes up.
And you know as well as I do that the "ethnocentrism" of the primitives is a facade.