Less than six weeks after our KQED colleagues from On Our Watch published an episode that revealed new information about the police killing of Oscar Grant, California’s Attorney General Rob Bonta announced he was opening an external investigation into the 12-year old case, which he says remains unsolved.  KQED's Sukey Lewis spoke with Bonta to discuss systemic issues in California policing, and how he wants them to be addressed. She also covers some upcoming police reforms that could lead to more accountability and transparency. Listen and subscribe to On Our Watch.