If you think I am blowing smoke , get this book from Angela Saini called "Superior" or start a reading group of your friends, and read it and discuss it. Or, watch her talks. She is not talking superstitions This s real stuff she researched. .https://www.sciencefocus.com/science/race-science-angela-saini-on-the-creeping-resurgence-of-racism-in-science/