Soledad O’Brien speaks with Paul Butler, a former federal prosecutor, who is out with his new book called “Chokehold: Policing Black Men.” He explains his idea that the criminal justice system is working exactly the way it is intended to work. Then a look ahead to our themed program on Detroit with retired Sen. Fred Harris for the 50th anniversary of Summer of 1967 riots and the Kerner Commission. And we take a look at a new driver’s ed course requirement – learning how to handle a traffic stop.