In places where people are violent, banning guns works to increase violence. This applies even when guns themselves are not used in the crimes. This was the experience both of Britain and Australia. If the goal is a better quality of life, people control with respect to gun ownership is retrogressive. It makes things worse, life worse.
And logically, if people are not to be reformed from their violence via coherent moralities–none of which are on display in the dialogues of our power elites, whose sole focus is soulless egalitarianism–then at some point the solution they will inevitably propose will be the centralization and monopolization of violence in the body of the State. Drones and cameras will surround everyone; everything will be seen, and police omnipresent. This is no way to live.
Thus, LOGICALLY, the only way to decrease violent crime without recourse to violent totalitarianism, is through CULTURE, through better ideas, through better economic policy. Where are the people proposing these? We cannot go backwards, but we can clearly go forwards better than we are doing now.