Dmanwuzhere wrote:If I choose to disregard others rights and shoot everybody then if I am not killed can I have all the other gun owners stand in my stead for the trial?
If not then they in that same regard should not be punished by Congress for my actions.

I'm also a multiple gun owner but don't be calling me to stand on trial in your place. Call your Doc who has been treating you for the last five years for your paranoid behaviour and could not do anything to prevent you from downing a quart of whiskey, grabbing your thunder stick and going out taking out as many people as you can before you go down.
It makes it easier to see the consequences when you have actually been in that situation.
It also makes it easier when the "after action", postmortem is done regarding the incident and how it could have been prevented.
For the record, this actually happened to me. Fortunately, no one was killed in my situation but it was tense just the same.
Nobody sleeps well when they know old "whats his name" from down the road is going to have another one of his "nights" and could put a bullet through your home while your sleeping in bed.
The mass killing problem by firearms is a problem only a few countries suffer from despite the prevalence of guns in many other countries around the world. If that question why this phenomenon could be answered and solved, the firearm problem that no one has would go away on its own.