“Take Lorraine Hansberry's 'A Raisin in the Sun.' Well, it's a working-class family, and it's about upward mobility, but systematic racism is preventing them from having upward mobility. I remember seeing the film first and not even realizing that it was a play. Of course, it's a story about economic apartheid, but I only later saw the resonance in the tradition when I read August Wilson, Amiri Baraka, and later, Lynn Nottage.”