Clinton, I more or less agree that the word "bigot" is preferable to "racist" (or "racialist" as it's said across the pond). However, it is a species, not a race, which is characterized by the ability of its members to breed with one another. Races are distinctive groups within species, and by definition their members can interbreed. Because of such interbreeding, the "edges" of those races are very blurry (most noticeably here in Hawaii), but just because some things are gray doesn't mean there is no such thing as black or white. There are biological differences between human races; as a doctor, I see that all the time. For example, the predilection of sickle cell disease for Africans, of alpha thalassemia for Southern Asians, and of cystic fibrosis for Northern Europeans.

Be that as it may, however, your point is well taken. And I hasten to add, lest I be misunderstood, that I do not include mental ability among the characteristics that show a racial distribution.

Aloha,
Mark