Attorney Ben Crump on Trayvon Martin: Since 2012, the families of several unarmed young American black men shot to death by police in high-profile incidents have turned to civil rights attorney Ben Crump in pursuit of justice. Crump has now written a book arguing these killings are the consequences of a flawed and racist criminal justice system. Yamiche Alcindor talks to Crump about “Open Season: Legalized Genocide of Colored People.”