What do you mean by a law for responsibility on gun-ownership to not cause another person's death, in self-defense or not? Perhaps you could explain this further.
I just don't understand the purpose of owning a firearm for defensive purposes, if the intent isn't to have the potential of shooting someone during warranted situations. (Unless it is being used specifically for hunting).
Florida (and other state's) "Stand your ground" law is a big part of the controversy, because it preemptively justifies a gun owners use of their firearm in any situation where they 'feel threatened' without exploring other options to retreat or otherwise resolve the situation without violence. This obviously appeals to certain 'honorable' sentiments and echoes the romanticized "These Colors Don't Run" battlefield mentality.
Problem is, none of those various sentiments are, to my way of thinking, morally justifiable, especially in a civilian setting. To be clear, I affirm the right to own a gun as a defensive weapon, and with proper training and due care it is undeniably effective in that regard. The problem is, just owning a gun doesn't provide you with the skills to use one effectively in defense, let alone instill the responsibility you take on in owning and operating a tool specifically designed to end human life.
In short, my stance is that murder in self defense is every bit as reprehensible as murder (aggravated, premeditated, or otherwise). Laws should reflect that, I think, by not automatically exonerating those who use a gun in self-defense or put another way, people who own guns should still have the threat of a murder charge over their head even when they use the gun "defensively".
As the daughter and sister to retired cops who served in the army and marines, niece to a deputy sheriff and gun lover myself, I can tell you that if you pull a gun on someone you had best be ready to shoot to kill. There is no shooting to wound. If all you do is wound then you stand a chance of the other person taking your gun and using it on you.
It's real simple - guns do not kill people. People kill people. All this bitching over guns when guns are not the problem. We humans are the problem.
To paraphrase Chris Rock, "Guns help."
If you stick two people in a room, give one of them a gun, and let the other guy point his finger and go 'bang' then the outcome is going to be pretty obvious.
People kill people, and guns make it easy for potentially anyone to kill anyone else even by accident. Look at it this way, if you hand a psychotic killer a knife and put them in a crowded room, their potential to commit mass murder is less than that of a 6 year old with an loaded handgun in the same situation.