Again Reb Eliezer I think that you are ignoring the central point.
It is illegal to kill somebody.
It is really really illegal.
In some states you get the death penalty for it.
These people who are doing these mass shooting are breaking the law.
The fact they are breaking the law does not seem to phase them.
Now I am sure that you were of the opinion that making it illegal to buy a automatic weapon will make it harder for criminals to get them.
I am sure you also feel it is hard for criminals to get drugs and the epidemic of drugs in America is solely a magical occurrence by people suddenly displaying symptoms of illegal substances without having ingested them