Here is my take on this.
The government should, at all levels, encourage American Citizens to learn about firearms, how to use them, and recognize the responsibility that goes with firearm ownership and the consequences involved if you should ever have to use it in defence of your life, property, or loved ones.
Why doesn't the Government mandate firearm's instruction in schools. It could go hand in hand with the same instruction on our Constitution, and The 2d Amendment. This could be in conjunction with a new found curriculum on the responsibilities of being a citizen and a productive member of a community.
If every citizen was trained in the use of firearms, and given proper instructions on what it means to be a armed citizen, the Country would be a much safer place.
All of these so called "studies" that expound all of the tripe such as the link represents center around people who own guns but don't have a clue as to how to use them, or even more, the responsibilities involved in gun ownership. It's like giving someone a driver's license when they have never even driven a car.
I'm not talking about some 2 day course like most States have in order to aquire a CDL. Heck, Hellen Keller could pass that. I'm talking about real instruction and training.
Perhaps it is time for our Governments to embrace our American Heritedge, recognize our Bill of Rights, especially the 2d Amendment, as more than just words, and do it's part in education the entire population on firearms, their use, and the responsibilities involved.