Geoffrey G. O'Brien is the author of Experience in Groups (Wave Books, 2018), People on Sunday (Wave Books, 2013), Metropole (University of California Press, 2011), Green and Gray (University of California Press, 2007), and The Guns and Flags Project (University of California Press, 2002). He teaches English at the University of California, Berkeley and San Quentin State Prison and lives in Berkeley, California.