Don't forget W.E.B. Du Bois who introduced the philosophy that "race is a social construct" arguing that "race was a bad proxy in which to classify peoples behavior". He founded the NAACP and his idea eventually became the CRT/1619 basis: race does not determine characteristics of human behavior, but that believing such has led to the "systemic racism" we see today. It's all psychological bullshit, but not overly incorrect. Example: albino nigs commit the same amount of crime as melanated nigs. Ergo, the level of melanin in the skin may not play a significant role towards the proclivity to produce crime, however it does present itself as an easy and quick marker, as many species already do in nature, to be cautious (never relax) around said animals. If not skin/race, then what would be the best way to distinguish species of humans, since we are not the same?