Industrial collapse is the most prominent theme among cities with a lot of violence.

Pretty sure it has more to do with the collapse of industry and the complicated socioeconomic conditions of cities, and nothing to do with insufficient incentives for gun ownership.

Many of the cities with the worst gun violence are in states with some of the most gun friendly laws, like St Louis, Missouri; Birmingham, Alabama; Memphis, Tennessee; and Dayton, Ohio (all of which have experienced industrial collapse in recent generations).