Predictably, there will be cries to restrict the instruments of Naveed Afzal Haq's actions — firearms — as a means to control violence of this sort in the future. Coming on the heels of another shooting spree in March of this year on Capitol Hill, there will be much political temptation to be seen to be "doing something."

And legislating more restrictions on the right to keep and bear firearms is often viewed as an emotionally satisfying and politically convenient way to meet that psychological need to do something — anything — in the aftermath of a tragedy like this.

But that inclination is misguided on two points, one based on principle and the other on practicality