Linda Tropp speaks on "Coping with violence" on New England Public Radio, April 26, 2013

One week ago the public was stunned by the Boston Marathon bombings. A week later, we’re learning about the two brothers who allegedly committed this act of terrorism. New England Public Radio’s Susan Kaplan spoke with Professor Linda Tropp, the director of Umass-Amherst’s Psychology of Peace and Violence program. She says when something terrible happens — psychologically, we want to re-establish a sense of security.

listen to the broadcast on NPR