It makes sense to me. I went to both a high school and a college where there were sizable minority groups. To be clear, I ended up making friends with a divers

It makes sense to me. I went to both a high school and a college where there were sizable minority groups. To be clear, I ended up making friends with a diverse group. But I would often get strange looks for not sitting with other members of my own race (asian) in my classes. What I noticed was that, if the minority populations are large enough, there is no incentive to really inner mingle among races. At my college, you would see fraternities where there were clear race lines, so there would be a white fraternity, an asian fraternity, hispanic, etc. Conversely, there is a university in a nearby city where the minority groups are much smaller so minorities don't have the luxury of clustering together into separate groups. So I saw more people with more cross-race relationships.