I think the point Scarblac was trying to make is that by the biological definition of race, there is only one human race, and all human belong to it. We have hi

I think the point Scarblac was trying to make is that by the biological definition of race, there is only one human race, and all human belong to it. We have historically said that Black people, White people, Asian people, whatever, belong to different races, but that's not accurate and it is that error that lets racist ideas (in the discriminatory sense) to exist. Those "race" categorizations have no basis in biology and have shown to be flexible over time. A hundred years a go, an Irish person would not have been considered white, and a Spanish person might have. Today the Irish man is white, and the Spaniard might be called a Latin. I think it's better to say that race exists, but it's a cultural construct, not a biological reality. It's clear that in the USA the largest part of people with black or dark brown skin color have a shared history and culture that comes from the capture of native African population. They clearly have something in common, and they exist as a group. The term "race" is problematic, but it's the best one we have.