Racism is very bad for previously recounted reason, but it nonetheless clearly exists.
The very stupidest people among all ethnicities need to feel that they're smarter than somebody so they demean an entire race or two or three.
Humanity had been around an estimated 120,000 to 300,000 years and still hasn't come the slightest bit close as to what to do about this problem.
Those who wish to alleviate racism, however, try to do so by ignoring facts. Temperate climate races, i.e., Asians and Europeans, have progressed more rapidly than others,
but it's politically incorrect to study why. If we don't want to know, we should stop talking about it.