I agree. This is where real solutions would lie, looking into what is different in those countries versus in the US. The answer - as you imply, though don't state - is social cohesion. The reason people are snapping and going on shooting sprees is not because of the weaponry to which they have access, but because our media and government class (the same people) have used every opportunity to set groups against each other (black/white, jabbed/unjabbed, pro-war/anti-war, urban/rural, etc, etc, etc). There have been zero attempts I have seen in the dominant media or political discourse over the past decade for competing groups to get together and negotiate. Negotiation is now seen as "capitulation" and is automatically ruled out. Well, take that political strategy and translate it into the broader population through the cultural organs (as they very much have done), and you end up with insanely angry individuals.

This is the problem when a governing class believes themselves morally superior to those "below" them. They have entirely forgotten about representation. It's a pipe-dream now. Yet they are surprised when people who no longer have any way to be represented in their perspective lose their shit. The grand poobahs like to treat all these issues separately - each in its own little box - but when they treat half their population like serfs, there is a connection when that half of the population generates unstable souls with an inability to process the truth of their rage.