Very interesting point seeing as how individuality is in the direction of modernity. And I think it is. I don't think there's anything wrong with Western-style individuality. Therefore, I think the problem lies elsewhere. Maybe there isn't enough gun control in the US?
I really think it is mostly because everyone suspects that every one else around is out to take advantage of them in some way.
And then unnecessary Spy VS Spy comic strips ensue.
Of course this would also lead to more paranoia and therefor more gun sales.
Toss in Abe's Law of Attraction and as a sorcerer's havoc staff draws in minions from another dimension, guns draw in minions to shoot at.