Indeed. There is a substantial amount of material now on how "biological" racism gets hidden inside "cultural" racism. And it is a spontaneous reaction. About 30 years ago I explained to a class the incoherence of "race" -- and immediately several students said something like, but there's a difference in culture! In practice, when "race" is at issue, "cultured" should be seen as a perfect synonym of "biology."
Carrol