Boston Marathon Bombing and the Politics of Gun Control

In a week that stunned the nation, we look at the attack on the Boston Marathon and the suspect manhunt that has consumed the city of Boston. Also, we look at the politics behind the “shameful” defeat of gun control legislation. Plus, how do leaders respond to uncertain times. Joining Gwen: Tom Gjelten, NPR; Peter Baker, New York Times; Jeff Zeleny, ABC News; Karen Tumulty, Washington Post.