I read here genetics, because you're avoiding a sensitive topic. I actually think that it is culture. Often people attribute to melanin what is very obviously

I read here genetics, because you're avoiding a sensitive topic. I actually think that it is culture. Often people attribute to melanin what is very obviously an issue with values and cosmovision, as part of the culture that someone breathes since childbirth. Which is solvable with education but only on generational timescales, unfortunately. Similar to Planck's principle, "Science progresses one funeral at a time".