Happens all to often. If there's a gun up for graps, high sugar breakfast, people throw a tantrum and pull the trigger in split second of rage. They can't think straight.
If there's no gun, they can't shoot and they are forced to think over their dicision to hurt someone, reason takes over and it's done, nothing happens. The above case show that it can happen to everyone!
It was a family argument that turned into a shooting, If there was no gun in the room they would have probably had make-up sex by now, or maybe the mother was being hospitalized for having a sudden psychoses. But their two daughters would still be alive.
That's why the US have brothers shooting each other over a videogame, parents killing their kids over spilt milk or a sacked employee shooting his boss.
Try stabbing your siblings or your boss, it's a lot harder to do, takes longer than a split second and 99,99% won't do it and come to reason.
Try to throw a punch against that big guy that just stole your date, you won't dare.
Try being a cop in a country were you can get shot by everyone (kids, moms, dads, etc) in a split second because you pulled 'em over and they are in a wrong mood, you'll wind up crazy eventually.
Only idiots can't see the simple fact that's staring them right in the face. It makes me sad and furious. It's probably to late anyway, there's just to many guns already.
Think for one second everyone reading this who owns a gun. Would you be able to stop yourself from shooting someone if your were somehow blinded by rage or wasted out of your mind for the first time after a party? There's really only one answer, nobody could if there's a gun on the table right in front of you or in the glove compartement of your car.