Today's Shooting Worse Than Columbine

With 27 believed dead, NBC News puts today's horrific Connecticut school shooting in the context of others our country has weathered, and it's as devastating as it seems: It's worse than Columbine. The Sandy Hook Elementary shooting is the second worst in our nation's history, topped only by Virginia Tech and its 32 fatalities in 2007; 13 people died in 1999's Columbine massacre. One parent with a son at the 600-student school described the experience of waiting to see if his child was OK as "the most terrifying moment a parent can imagine." Seeing him "was the greatest relief in my existence." Click to read the latest on the massacre. (More school shooting stories.)