Do popular US wars also help to popularize gun violence, you think?

[Philip]

Yes, without a doubt.

When a country goes to war, it makes a public statement that might is right. When that is a war of choice it further demonstrates that violence is a viable solution.

The side effects you mention help break down society and increase the risk of violence. We also see that the media (including video games) often choose war-related scenarios that contribute to the overall violence of society.

I'm not sure how closely related our war culture is to mass-shootings in particular, but there is no doubt that they contribute the violence and a high homicide rate in general.