For the record, I don't think a person should be able to use "assault weapons" or "machine guns" or "rocket launchers". I do think guns should be allowed. But certainly not everyone is "qualified" to use a firearm.
Even if you legally, rightfully can have a weapon, it doesn't mean that a "kook" wouldn't steal it and use it in a nefarious way.
I am convinced that you could take licenses away from drinkers and they still could get behind the wheel and wreak havoc.
You could ban switchblades and gun silencers and people will still find a way to quickly slice you up or muffle a sound.
You could ban or try to curtail cough medicines and people will still find a way to get high.
WE cannot, government cannot---CONTROL what people will do. And especially, if a person has mental issues, you never know what might happen.
You could get rid of cars, you could get rid of weapons, you could get rid of drugs---but people will always find a way to wreak havoc if they are so inclined.
The major problem is society. Many people do not have basic principles that guide them to think and do what is right. I see children without any direction looking for acceptance and they join gangs and cause mayhem. You see parents who probably never should have had children and yet they produce households of dysfunction.
It is sad. Crazy people and criminals are bent on disobedience and flouting of society's dictates.