Jan, the perfect world will not come about until after the resurrection. Until then we all have to take responsibility of protecting ourselves and our own. In this case the parents of the gunman have to take the responsibility of being this guy's parents and the shooter will take the responsibility of being locked up for life or put to death. The culture of death started with Cain and Able and has only gotten worse over the past 6,000 years. What does responsibility mean in your life?