Will events in Ferguson help define American policing?

Aired: 3/12/2015 | 0:08:28 | Clip
Hours after the chief of the embattled Ferguson Police Department resigned, two officers were shot from afar during a peaceful protest. For reaction to the events and how they affect law enforcement, Judy Woodruff talks to Chuck Wexler of the Police of Executive Research Forum, Cincinnati Police Chief Jeffrey Blackwell and Darrell Stephens of Major Cities Chiefs.