Melissa Harris-Perry 12/14/12

Gun violence all too familiar for Americans

The Nation's Ari Melber, The Grio.com's Joy Reid, MSNBC contributor Michael Eric Dyson, and Dr. Jeff Gardere, join Melissa Harris-Perry to turn the conversation to other mass shootings around the nation, in a string of violence that is all to familiar ... more Duration: {{video.duration.momentjs}}