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.
That’s a pretty big leap to go from “most Asians are lactose intolerant” to “they’re bred different”.
I get what you’re saying, and mostly agree. But “they’re bred different” implies some sort of sub-human deliberate motive beyond just a consequence of a population living in isolation for centuries.