Three Shootings in a Week Over a Simple Mistake. Why Is This Happening?

A 16-year-old rang the wrong doorbell and was shot. A woman was shot and killed when she and her friends accidentally drove into the wrong driveway. Two cheerleaders were shot after one approached the wrong car. 

Three shootings in less than a week, all allegedly occurring with victims who made the mistake of approaching the wrong house or car, have ignited a debate over why these types of incidents are happening and what could be done to prevent them.