Newtown. Columbine. Virginia Tech. Tucson. Aurora. Gun violence on a massive scale has become a plague in our society, yet politicians seem more afraid of having a serious conversation about guns than they are of the next horrific shooting. Any attempt to change the status quo, whether to strengthen gun regulations or weaken them, is sure to degenerate into a hysteria that changes nothing. Our attitudes toward guns are utterly polarized, leaving basic questions unasked: How can we reconcile the individual right to own and use firearms with the right to be safe from gun violence? Is keeping...