Oversimplifiers vs. Difference Deniers: a dynamic regarding group differences that leads to rage and confusion

Here's a misery-filled dynamic that I believe commonly plays out regarding small observed differences between groups: (1) Two groups have a small (but meaningful) difference in their average value of some trait, with heavily overlapping distributions. (2) Some people ("Oversimplifiers") observe this difference (in their everyday life or media reports) and turn this small average difference into a (sometimes very harmful) oversimplification: "A's are like this, B's are like that." (3) O...
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Who Are We Kind To, Who Do We Kill?

I've been trying to better understand and resolve two seemingly contradictory (yet I think critically important) facts about human nature: (1) Human groups have pretty much always done unspeakably horrible things to other groups (e.g., think mass murder and numerous forms of oppression). And fairly often, while it is happening, this evil seems to be condoned, supported, or only passively opposed by a large and fairly culturally representative group, rather than by just a few very bad people....
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