What about social darwinism?
This has a lot to do with race.
Again, social darwinism has lots of problems with it. It tends to suggest that there is a superior race. Or "caucasians" are naturally better than other races. Or in case of nazis who promoted this idea by replacing it with "Aryans". That's where all the problem comes from. And that's why most of the people are inclined towards not accepting the reality of racism.
People's line of thinking -
“If there really are different racial groups, then one must be The Master Race, which means -- oh my God – that Hitler Was Right! Therefore, we must promote whatever ideas most confuse the public about race. Otherwise, they will learn the horrible truth and they'll all vote Nazi.” Ignorance is bad in this case.
Off course, there are different racial groups. And of course their members tend to inherit certain different genes, on average, than the members of other racial groups.
And that means racial groups will differ, on average, in various innate capabilities. But that also means that no group can be supreme at all jobs. To be excellent at one skill frequently implies being worse at something else. So, there can't be a Master Race.
Any person who watches sports can clearly tell this. Men of West African descent monopolize the Olympic 100m dash, but their explosive musculature, which is so helpful in sprinting, weighs them down in distance running, where they are also-rans.
Similarly, there are far more Samoans in NFL than Chinese, simply because Samoans tend to be much, much bigger. But precisely because Samoans are so huge, they'll never do as well as the Chinese in gymnastics.
Similarly,South Americans and Europeans dominate the european football leagues. The number of Asians ib those leagues is handful.I think any sane person who watches sports will agree with this.
But people tend to close their eyes from the truth. Because they believe in "equality". ahem.