Cain made the first blackface turn, blackface minstrels liked to say of the first man forced to wander the world acting out his low place in life. It wasn't the "approved" reading, but then, blackface wasn't the "approved" culture either--yet somehow we're still dancing to its renegade tune. The story of an insubordinate, rebellious, truly popular culture stretching from Jim Crow to hip hop is told for the first time in Raising Cain, a provocative...