Yes, there is a climate of fear in the USA now, and that, along with economic distress, is the engine driving gun-related violence.

In Switzerland, where there are a very high number of military firearms in the hands of the civilian population, there is very little gun-related violence, because in Switzerland you don't have that societal climate of fear and economic distress...and you have an orderly and peaceful social tradition going a long way back.

In Somalia the climate of fear and the economic distress are about as bad as they could possibly get, so the profusion of guns there leads to a tremendous amount of violence.

As a population thinks about life, so it will be clearly reflected in what they do. The problem in the USA is a psychological problem related to both past history...and present political, economic, and social forces. The solution is a gradual shift in politics and national psychology, and a more just economic situation, not a few more bandaid laws stuck on the wounded body politic.