Compare the number of gun crimes in Britain or Australia with those in the US and you will see the difference. The argument that because a couple of homicidal idiots managed to get guns that guns should be made available to every homicidal idiot is a bogus one. The fewer guns that are in circulation, the fewer gun crimes there will be, The harder it is to get a gun, the fewer guns will be used in crime.
It did not take "centuries of repression" to cut the number of guns in circulation in Australia.
I question your whole premise and every "fact" you cite here as questionable.
We observe in the US that as MORE guns are in circulation , not only are there fewer gun crimes , there are fewer of all crimes, there is no way to infer from this that a greater number of guns is a cause of greater numbers of crimes, and there is also no way to prove from the facts that
The fewer guns that are in circulation, the fewer gun crimes there will be, The harder it is to get a gun, the fewer guns will be used in crime.
It seems instead to be a disproved myth.
But then what about
Compare the number of gun crimes in Britain or Australia with those in the US and you will see the difference.
No you won't see the diffrence that gun controll makes doing that, not at all.
What you will see is the diffrence that culture and government and diffrent situations make.
If you compared the US and Britian and Austrailia in 1900
before gun controll you would see this same diffrence!