Color on a weather radar is fairly easy to interpret. Bright oranges and reds mean a strong storm is on the move. Green means light rain. But human behavior can’t be packaged so neatly. For years, law enforcement agencies developed profiles of people who commit certain types of crimes, like serial murder. These profiles defined which variables increase the likelihood that someone should be considered a suspect, including the color of their skin. Time and again, they were proven wrong. Dead wrong.