What the leftists in government fail to understand is that the ability of sick people to kill innocents is limited only by their imaginations. Were we able to wave a magic wand and disarm all the criminally insane and the criminally violent, we'd start seeing ANFO bombs blowing up schools, or chlorine gas bombs, or propane tank bombs. Sickos would be loading a car with cheaply and easily produced or readily available explosives and lots of shrapnel, then drive the car through a classroom wall into a room full of school kids, and detonating themselves. We CANNOT legislate away the ability to murder. What we CAN do is lock up people who are sick enough to WANT to commit these types of crimes.