I wonder if changing the requirements to buy a gun would help with all the shootings? This kid who bought this AK-15 was 19 years old and purchased it legally. Yet, he can't buy alcohol. I wonder if raising the age to buy a gun to 21 would help? I think there should be classes for people who buy guns to take care of them properly. One thing we don'thear much of is how many kids die from just finding a gun in the home and playing with it and it accidentially discharging and killing someone. If guns and ammunition were stored separately under lock and key that wouldn't happen.
I find it odd that the US allows someone to buy a gun at 18, to marry at 18, to be allowed to join the military (and indeed to be forcibly conscripted) at 18, but not to have a beer until 21.
One issue is that a simple "one size fits all" approach just doesn't work. If you have children in your home you have to be responsible for them, which includes making sure they can't open your closet and play with your loaded guns. But if you don't have children in your home why should you be obligated to take childproofing precautions for your guns?
As far as helping with the shootings goes, I'm not sure that there is much that can be done. Typically after an event like this there is the predictable political whining from the left that we need tighter gun control (despite the fact it's already illegal to take a gun into a school and it's already illegal to kill people, so the shooter already broke two laws and probably wouldn't care about breaking another one along the way), and equally predictable comments from the right that the answer to a bad guy with a gun is a good guy with a gun.
Looking at simple facts, shootings in schools are safe for the shooter because they can be assured it is very unlikely anyone will have the means to stop them. So in that regard, and given it's proving impossible to physically stop people taking guns into schools, maybe the answer is to allow (maybe encourage?) teaching staff to carry weapons of their own.
In principle introducing a legal requirement to take some form of training before buying a gun makes some sense but there are still endless questions relating to enforcement of it, and relating to maintenance of it. If you take a training course at age 21, buy a collection of guns and keep then for 50 years, are you still "trained" to handle guns at the age of 71?
Of course one major issue is that once someone has decided they are going to go and kill a lot of people, the chances are they will find a way whatever legal obstacles might be thought up in some far-flung city. If they can't buy a gun they can probably find one. Or they can make pipe bombs, as the two perpetrators of Columbine did. Or they can use a motor vehicle, as has been seen multiple times in Europe. Or they can make a toxic gas, as has been seen in underground transit around the world. Or they can use knives, axes etc, as has been seen in Europe. The fundamental trouble is the intention to kill rather than the choice of weapon to achieve the goal. Once someone has reached the stage of wanting to do such a thing the battle is already lost. We'd be better off trying to figure why people reach that point than worrying about the weapons of choice once they have reached it.
If guns and ammunition are stored separately and in separate locked boxes it means they are of little to no value for home defense. If someone breaks into your home you want to be able to reach your loaded weapon quickly, not fuss with trying to unlock one box in the dark to get your gun, to then unlock another box to get the ammo, to then load the gun, and hope you managed to do it all before it's too late.
Although a child dying from self-inflicted gunshot wounds in the home (or from gunshot wounds inflicted accidentally by another child playing with a gun) is a tragedy I'm not sure it warrants attention over and above a child dying from any other seemingly avoidable cause in the home. Is a child dying because they found Daddy's gun and shot themselves with it any more of an issue than the same child dying because he found Daddy's painkillers and ate them all thinking they were candy, or dying because he found a bottle of bleach and drank it, or dying because he opened the window and jumped out thinking his Superman cape meant he could fly? Ultimately it comes back to parental supervision, and only the parents are adequately placed to assess the risks in their home and figure what precautions need to be taken to protect their children.