Given that racists and slavers used the “natural physical strength” of black people to justify putting them on hard labor and some medics still think that blacks has higher resistance to pain, I wonder if when black athletes started to join mixed race sport teams, some racist would have used the same “biological advantage” argument that now transphobes use against trans athletes to claim it was “unfair” for black to compete against whites to justify segregation.
I’m not trying to be pedantic, but I want to draw your attention to what you said about being unsure about the person’s motives. If a person says something like “they (a group of people) are bred different” then that’s racist. It doesn’t matter if the person is a bigot or openly hates people for their skin color or not; that kind of belief is eugenics and is a racist belief.
Good people, well-intentioned people, can be and are racists, because they are raised with certain ideas and beliefs that are rooted in racism. The things that pop into heir head are racist because they haven’t taken time to look into their own beliefs and understand where they come from, to de-racialize their thinking.
Or, you know, they’re bigots and like having racist thoughts because it serves the bigotry, but that’s a different problem.