The various states have different laws about firearms, some with more registration requirements, some with greater penalties for misuse, allowing or forbidding open carry or concealed carry - there is variety. Some municipalities have additional restrictions. These have changed over the years, so there are comparative numbers in the same places. You don't need any special training to research this or special permissions to get the important information. Other people have even assembled a lot of the comparisons for you if you like, or if you don't trust them you can do the digging yourself. A bit tedious, perhaps, but doable right in your own home. You can move the pieces about, looking at the differences in violent crime or homicide in states that allow X, and some trends of what might happen if you do Y or Z.
What you will find is that the laws make very little difference, if any. You will find things you may consider counterintuitive, such as easier access to guns or ammunition actually resulting in less crime occasionally. Not a lot less, but you were surprised to see any at all. We could have long and controversial discussions about what does change crime rates in a place, which is how I keep getting off into long essays, unable to get the wagons in a circle.
Nor is there any evidence that making laws restricting guns will change our culture away from our violent history to a peaceful and gentle people. No, not even gradually. Europe's internal crime rate went down long before they changed the laws. And they didn't even get a final reduction when they did get around to making it very difficult for people to own guns or to account for all ammunition. The rates had gone down already, didn't move any further.
Once you grasp this you will see how deeply offensive it is to take the attitude after a tragic shooting that it's just obvious what
we need to do, but all those terrible villains, those gun lobbies
buying politicians, or our gun-obsessed culture, or the gun
manufacturers making all that money, or the cowards who refuse to stand
up to them, all refuse to do the obvious. This shows that those villains
are stupid or evil or both, not caring about little children and
deserving to be publicly confronted and shamed. As with so many things, we say, we could do it if we only tried. If we only had the courage and the nerve to do X - in this case, one of a dozen things about guns - If only we really cared, it would get done easily.
Whenever you find yourself thinking such things, understand that it could be a projection, or at least an irony. It could be you who has found a comfortable place to sit, requiring no courage or caring, but getting the benefit of feeling like a crusader, an opponent of evil. Please notice that this supposed evil just happens to coincide with cultural groups you don't like, cultural groups that are in fact in competition with yours for political and status dominance in America. Huh, funny thing. I wonder how that happened?
I am hard on you because I once sat among you and know now my own darker motives. Perhaps not yours? I hope so for most of you, but the national behavior and the individual comments even from Nice People over the years has convinced me I was not unusual. Gun regulation outrage with disdainful cultural comments is a comfortable place to sit.
The belief in the obviousness makes it more insulting, and thus morally offensive. Complaining at politicians "You should have done something, this is your fault" is just vile. Fun, though, I imagine. Asking what the church's response to this should be - isn't that a question that has already assumed the only answer it wants to hear? "The church has failed if it doesn't show the courage to do something about this." Wait, what's your real religion again?
The protest will come "Well can't we even try?" We have tried, many things. One of the difficulties is that once you have a regulation in place and the means for effecting it, it tends to stay in place forever. Not always. Massachusetts passed a very restrictive mandatory incarceration law in the 90s and crime went up. It was still hard to get rid of - ask yourself why people would still want to keep it and you come up against the fantasies of people who think that it should work, and would, if we just tried harder - but they managed it.
I very much liked Aggie's comment under "Expectations." It was in the context of the continuous-improvement work they needed to do in drilling, and in that industry it had gone well, because people wanted safety, not to find others to blame. Yes. When there is a society-wide problem, the first thing that is required to improve matters is honesty and good faith in communication, usually the last things to become apparent - and even then, in deficit. The biggest task in creating a proactive safety culture is gaining acceptance that this is the priority at the outset. Once people buy in, the culture of continuous improvement takes wing. Ironically, to work safely one has to first feel safe in being able to communicate their observations and ideas without fear of criticism. Shame is a very powerful emotion.
So sure, we can try. But it has to be about real-world change, in the context of costs, whether there is infringement on freedoms of the innocent, and acknowledgement that it's not magic. It can't just be another one of those things where we Do Something in order for people to feel they have made things safer when all they have done is won a cultural battle by manipulative means. I'm not even a gun owner and I find myself continually moved to defend them against unfairness.