For once David Brooks has come out with a column that I, in part, may even agree with a little bit. It's about the fragmentation of music, as part of a great social fragmentation.
Except, of course, this being Brooks he's left out two very important points.
1.) Rap/Hip-Hop IS almost universally popular with youth, white and black, even though it's mainly being made by black youth.
2.) Fragmentation and division are driven in part by economic factors. Greater cohesion probably requires greater investment in public goods, something that's going to require government action and probably higher taxation. Brooks carefully avoids this, talks a lot about foundations. Private charities are helpful but not sufficient for the work that is to be done.