Working for Peace After Gun Violence: We talk to three people who, when affected directly or indirectly by gun violence, have channeled their pain and upset into efforts to address the gun violence and neighborhood safety issues in their own way. Guests include a survivor of the 2007 Virginia Tech mass shooting, a mother who's son was a victim of street violence in Chicago in 2007, and an Albuquerque father of two who was moved to act when hearing of the Sandy Hook Elementary School shootings 2000 miles away in Connecticut.