One thing I see is a tendency of people to drag out the stocks and the pokers and such when something like this happens.
Bad idea. All that does is provide motivation for the sick fuckers to continue doing it.
Prosecute them, judge them and then punish them.
Take the guilty ones and line them up front to back 10 at a time and one bullet from this
http://exit3.i-55.com/~suit/big_one/ ought to do it. 1:10 bullet to kill ratio. Cost effective, quick, and final.