Tragically more people don't go in for the lucrative field of anthropology, maybe they can't handle money or the glamorous lifestyle :P

I think given the turbulent and problematic history of race based discrimination in our societies, it isn't a big leap from the connection of macro traits like: some races are smarter than others, more prone to crime than others, or whatever, to a dark undercurrent of the sort of racism that leads to ideas like eugenics. Historically those sort of rationalizations are the building blocks of just such ideas.

It might be unfair that people jump to that conclusion of course, but the impulse itself is understandable.