From 2013 Tufts Magazine:

If you understand the United States as a patchwork of separate nations, each with its own origins and prevailing values, you would hardly expect attitudes toward violence to be uniformly distributed. You would instead be prepared to discover that some parts of the country experience more violence, have a greater tolerance for violent solutions to conflict, and are more protective of the instruments of violence than other parts of the country. That is exactly what the data on violence reveal about the modern United States.