Does federal review lead to real police department reform?

Aired: 2/2/2016 | 0:06:25 | Clip
The Justice Department plans to review the San Francisco Police Department after a fatal shooting of an African-American man in January. While that city requested the review, across the nation, there have been many others not undertaken voluntarily. Sarah Childress of Frontline joins Hari Sreenivasan to discuss a project with The Washington Post that examines how those investigations work.