"The unlikely heroism of Barack Obama began for me the first and only time I saw him, on a warm winter day in Los Angeles in 2007. He had just declared his candidacy for president and was holding a rally at Rancho Cienega Park in the Crenshaw district. Crenshaw is the last primarily black area left in the city; it is next to Dorsey High School, one of three majority black high schools left in the 700,000-student Los Angeles Unified School District, and for nearly twenty years it was the site of the African Marketplace and Cultural Faire, held in late summer. In other words, anybody holding an event at Rancho Cienega was trying to get a message out to black folks. The fact that lots of white folks lived pretty close by, some just across the street at Village Green, a leafy condominium community built as a prototype of utopian urban living in the 1940s, didn’t matter. Nor did it matter that whites live in considerable numbers in Ladera Heights, a few miles north of Rancho Cienega, and in much greater numbers in Culver City, a couple of miles southwest. The proximity of these places doesn’t connect them at all. Crenshaw is a black nation-state, so those whites who do live here don’t live outdoors, are never seen on the streets, and more than likely tell their white friends and potential visitors that they live not in Crenshaw but in adjacent places like Culver City or West Los Angeles. "