 We live in a country completely saturated with guns and far too many of them are fired at strangers. These days, many human beings have a similar panicked reaction to the sound of fireworks mistaking it for gunfire. It's a reasonable mistake when a man started shooting at a 4th of July parade two years ago in Highland Park, Illinois. Spectators at first thought they were hearing fireworks. Such shootings are so common now that the whole country is arguably suffering PTSD.