Some have ptsd and sees the enemy and criminals everywhere. Sometimes when another shooting happens it causes people to be fearful which in turn can lead to ptsd. I think that ptsd can be contagious when there alot of scared people sitting around talking about traumatic things. We all have anxiety. Sometimes it's caused by bullying. Sometimes mean people like to judge and go on witch hunts. Prohibition extremists can be really scary when they do that. Too bad there aren't really witches that can brew a potion to turn them sane.