Pretty clear, even today, where shooters go off on any public venue, it's abnormalities, not characteristic of our population. Mental is the clear cause more than even political extremists of any kind. But we do need to evaluate each case for some terrorist or political connection. No effort will be made by our media to correlate this event with either immigration trends or radical political association or religious indoctrination.You are right about bragging rights, but I do not believe having a badass gun is the catalyst for any shooters making that decision. I think it is their mental state so they are going to use the weapons available to them. Sure it might make a difference in a very small percentage, but take the guy who shot up the theater in Colorado. There are records of him meeting with a psychiatrist who indicated he was obsessed with killing a lot of people and had been obsessing about it for years and years. He bought 3 different weapons, a glock, a tactical shotgun, and an AR 15 looking gun. But if he had homicidal ideation for a decade and was that obsessed I really doubt that restricting him to a hunting version of the same rifle would have mattered. He wouldn't have thought "well I want to kill a lot of people and I have been planning it for a decade, but since I can't get a cool gun I guess I will call it off". I guess my point is that it isn't your buddies at work bragging about their assault rifles carrying out these shootings, it is people usually with severe mental health issues that are doing it. It is anything but rational.
We have resisted assertions that it's video gaming,, any media genre, any kind of music, any kind of pharmaceutical, any family or educational factor. We have seen so many cases of such events where the shooter would pass any present or future model of evaluation or qualifying restriction on purchase or possession.
But I think there is one statistic that should be looked at seriously. These shootings are much less frequent in places where people can legally carry guns, and in places where there is any kind of security personnel on site. I know the whole load about other nations where it's not like this country. But inside the US, there is that statistic differentiating the sites chosen by shooters.
Another statistic might be considered. Teaching secular humanism without a protected right to express faith in God in public places, particularly in schools. Teaching any modern philosophy in schools is equivalent to teaching a religion in school. Specifically excluding a philosophy where there is a higher moral authority invoked is likely a big part of the mental state that triggers shooters. Well, except specific beliefs that teach zealots to kill unbelievers. Other countries have more serious kinds of dissidents, more organized kinds of "resistance" to majorities, and maybe less statist propaganda. Dunno 'bout that. Authoritative governments come in all kinds, most of them much better supported by the people than our feuding parties. Probably a much better general sense of identity that accepts others better, and provokes less individual dysfunctional mentalities.
Any state-sanctioned belief system is worse than any religion or private personal mode of belief, or even a private group mode., except perhaps some intolerant religions that incite believers to kill or devalue non-believers. Any state-sanctioned social normative agenda is going to create "outsiders" or "dissidents": or other forms of estranged dysfunctional phenomena in some individuals. I believe, if you really looked into it, almost all shooters like this are "out theres" figuring they don't fit in or aren't accepted or "otherized" somehow, and with maybe some pharmaceuticals or malnourishment of some kind affecting some site in their brains that suspends normal inhibition against antisocial outbreaks.
All said, I think somehow, mental has be the big picture on this problem.