Another Mass Shooting in a Divided Country

The FBI is conducting a massive investigation into last week's killing of four Marines and a sailor in Chattanooga, Tennessee. We hear what's known about the young, Muslim shooter and the potential impact of the incident in southern states that are rapidly changing.

Also, Washington Post reporter Jason Rezaian marks one year in an Iranian prison. On today's Talking Point, what does a Texas dash cam tell us about American policing? We review the dash cam evidence with a legal expert.

Photo: Police tape and a makeshift memorial frame the scene after the shooting at an Armed Forces Career Center in Chattanooga, Tennessee. (US Navy)