Brixton is, like anywhere else, a different place to different people. My Brixton is a pretty good mix of people, with a strong representation of black Londoners, West Africans, Jamaicans, Trinidadians, and working class white people. Some situations I find that mix is there pretty much in its entirety, at other times one community or another dominates things. I don't see all that much racial friction, though there is racism in Brixton, it's just that most of the local racists have learned that it isn't appreciated. However there is the same problem of subconscious prejudice that you see pretty much everywhere. In Brixton, as elsewhere, the money and power is still largely in the hands of white middle/upper class men. There's still work to do in raising the aspirations and expectations of black youngsters. It's far from perfect, but hardly a failure of multi-culturalism.