Ahead on the 12/14 Maddow show

Updated
 

On tonight’s show we’ll be continuing msnbc’s live coverage of the school shooting in Connecticut. Our guests include: Dave Cullen, author of “Columbine”; Bob Herbert, distinguished senior fellow at Demos, former New York Times columnist; Rep. Carolyn McCarthy, (D) New York. 

Rachel Maddow Show Guest List

Ahead on the 12/14 Maddow show

Updated