'It's Not Black People's Problem to Undo White People's Racism'

San Francisco Magazine Ian A. Stewart Fred Hayes/Getty Images for SAGindie Berkeley-born poet and hip-hop artist Rafael Casal on writing his first film and working to understand black pain. This is "Think Tank,"an occasional series of conversations with Bay Area power players, conducted by San Francisco editors. Interviews have been condensed and edited for clarity. Name: Rafael Casal Occupation: Hip-hop artist, poet, and actor Age: 32 Residence: Berkeley Images and Captions: Schedule Date: Mond...