"believe that in a high proportion of gun massacres the weapons used had been legally purchased. "

Some, but not most Actually, the majority are not even on the books-

https://www.cheaperthandirt.com/category/parts-and-accessories/parts-by-gun-model/ar-15/complete-build-kits.do

And the 80% receiver required to complete it is $69-100, no restrictions. Now IF YOU COMPLETE IT you are LEGALLY required to do things- but how many of those who make them do that? Another example of a law that has bo positive effect, but made someone feel good about letting criminals have access to illegal weapons.


"How about strict laws that all lethal weapons should be securely stored in a gun cabinet, with room for specific exceptions to that to be permitted for adequate reason, Bruce? "

Tell me the reasons, and I will say if I agree.

In Montgomery County, MD, they passed a law that anyone who had reason could carry a pistol concealed, IF THEY WERE LEGAL FIREARM OWNERS. Pay your fee, get fingerprinted, have a background check, submit the form to the County Police.
Of course, they did NOT mention that the ONLY ones who were given approval were those who were police officers, politicians, or could get the political approval from the politician ( IE, the campaign contributors.) A business many who regularly carried large sums ( $20-50 K to the bank for deposit, say) were NOT issued such permits, nor could they get police escorts to the bank. This was back in the 1980's.