Your arguement is for the reaction to the idiot with the gun in the first place.
Allowing MORE GOOD CITIZENS to have guns and giving them the ability use them correctly and legally is a PREEMPTIVE action.
Gunmen like the CO guy and that ghetto thug in harlem for the most part are pussy cowards, who more than likely hope they are the only ones armed so they have the upper hand and are “safe”.
Concept is simple, the only safe way out of any of this is keeping EITHER PARTY from pulling the trigger. Good legally armed people wont shoot unless provoked. Morons might not shoot if they knew 50 other people near by are also armed and ready to defend.
The gun laws allowing people to CC are there to attempt to STACK THE ODDS AGAINST THE IDIOTS OUT THERE.