People need to stop saying that the catalyst for gun violence can be sourced to one reason. There is no "one reason." There can be some things that a have a more predominate effect on gun violence, and some that only have a little effect. Eventually you can break it down into a nature vs nurture argument. Then break down the nurture/environment part and try to distinguish which kind of environment can cause a person to act a certain way. Then realize that humans naturally have certain balance of chemicals in the brain and sometimes these chemicals can be affected by and his/her experiences in different ways. It's hard to separate humans into categories such as violent or nonviolent, obsessive or sociopathic. We have to try our best to research the best way to curtail violence in general. Is it by maintaining a society in which a basic standard of living is the norm such as providing universal healthcare and common sense regulations? We have a very difficult time understanding the ourselves and probably always will.