If half of America has the mind set "Why should I pay to contribute to the health of my fellow man", then all the energy spent talking about Mental Health is moot.
Secondly, it makes the assumption that people that commit these shootings are mentally ill instead of just being a petty petty person with nothing to live for.
I'm sorry, if you think "Banning the guns" will increase the violence, you may want to take off your "US is the only country that matters" blinders and look at Australia (already mentioned) and Canada.
For the longest time UK Police didn't carry firearms (not sure if they do now) and you'd think being unarmed police would be killed all the time, but it was rare. A police officer in the UK had a higher danger of being hit by a car than killed by a gun.
The real truth is in the UTTER and unending love of Capitalism in the US.
Guns, like healthcare and prisons and money makers.
If 'the man' can make you so fearful that you would take a life over losing your stuff, then they profit.
How much money does the NRA put into politics to make sure there is never a hint of a change?
Any person or organization that puts so much money into preventing one thing, you should ask yourself why.
When guns are cheap, they will be bought. And if the 'cost' to rob someone is far less than the potential take, you make it attractive.
Aren't guns that are used in these types of shootings usually legally obtained?
Sandy Hook was, the Church shooting was.
Within two days of Sandy Hook, a man in China took a knife into a day care.. Stabbed teachers and children, 16 or 17 of them.
No fatalities.
With a knife, you can do volume or damage, but not both.
When you put SO MUCH effort into the excuse, it's clear you don't want to deal with the problem.
So, when you ask "how do we stop shootings" (without really trying to limit guns, my answer is this
MOVE
Get out of the US. the gun laws only apply to that country, moving to Australia don't mean you can take your 2nd amendment rights with you.
Until you care more about people than profit, there will always be there things.
Also, understanding that the 2nd amendment happened 60 years before hand guns were first manufactured.
If your founding fathers could imagine assault rifles and the NRA, maybe they would have been more careful in their wording.