

Arthur Kellermann holds the Paul O'Neill Alcoa Chair in Policy Analysis at the RAND Corporation. Before joining RAND, he was a professor of emergency medicine and public health and associate dean for health policy at the Emory School of Medicine in Atlanta. Kellermann founded Emory's Department…
This commentary appeared on The Journal of the American Medical Association on December 21, 2012.
On December 14, a 20-year-old Connecticut man shot and killed his mother in the home they shared. Then, armed with 3 of his mother's guns, he shot his way into a nearby school, where he killed 6 additional adults and 20 first-grade children. Most of those who died were shot repeatedly at close range. Soon thereafter, the killer shot himself. This ended the carnage but greatly diminished the prospects that anyone will ever know why he chose to commit such horrible acts.
In body count, this incident in Newtown ranks second among US mass shootings. It follows recent mass shootings…
The remainder of this op-ed can be found at jama.jamanetwork.com
JAMA. 2012;1-2. Published online December 21, 2012