A fistfight led to the death of a 22 year old man. No weapons, other than the God given flesh covered ones, were involved.
In Hollywood, fistfights only result in bloody lips and bruised egos. Here in the really real world we know that hitting people is not good because of the potential to maim or kill a fellow human. Should we register everyones hands and feet?
My point in all of this is that mankind is born with the tools to kill, and the carrying of a more effective tool to offset this threat does not turn otherwise good people into killers, nor does it "give" verbal altercations the chance to be lethal; that potential is always there.
Here's another example.