A fascinating letter. I found the stuff about black kids and education to be the most interesting because it seems to be an area that is (possibly but knowing America probably not) fixable. I think the question of how to engage young black kids is one of the most important facing your country, and not addressing it means alienating and disenfranchising a large part of an entire generation.
That said, I don't agree with his point about black culture needing to be more separate from white culture and defined more along African roots. I think this hurts black people more than helps them. Slavery or not, if a family has lived here for generations and hundreds of years, those kids are American and they need to be more included in American culture, not taking steps to define themselves as 'other'. The more culturally segregated blacks and whites become, the less chance there is of there being true empathy between the races in either direction. It's not just black kids who need to learn black history, it's everyone.
The scary thing is, I don't even know if it is possible to re-engage those left out of the mainstream at this point. It feels like it's gone too far. Massive swathes of people with barely rudimentary education. Institutional racism in the police, poor black people grouped together in neighborhoods and ghettos. Crime, not education, portrayed in media as a way out. How do you fix that?