Btw, I have a some great period news articles on Booker T. and W.E.B. (who was amazingly conservative in his early publications). I'm ever fascinated by race and the progressive period. I don't think anyone understands it. I sure don't, although I'm quite certain that no one else does, either, no matter how much they think they do... Here are two fascinating articles by Booker Washington and WEB Du Bois that appeared in the NY Times in 1909, in anticipation of the 50th anniversaries of the Civil War:
Negro Four Years Hence: Booker T. Washington Takes Look AheadWarning: PDF files!Fifty Years Among Black Folks: Prof. Dubois Tells of Evolution of the Negro
I don't think Watts was the first riot of its kind. While the earliest race riots involved Whites attacking Blacks, Harlem had already seen disturbances of the sort that erupted in Los Angeles in 1965. The problem with debates about deeper causes, is that the most relevant factor was the behavior of the police. In general, you don't need massive programs or large scale changes to prevent such riots. You just have to make sure the police are well-equipped to deal with disturbances and do their job fairly and effectively without sparking such outbreaks.