" Why are you stopping people in places where there’s no crime?” Weisburd says. “That doesn’t make sense to me.” Sherman is just as horrified. “At that hour of the day in that location, stopping [Sandra Bland] for changing lanes is not justifiable,” he said. Even during the initial Kansas City gun experiment—in a neighborhood a hundred times worse than Prairie View—Sherman said that the special police officers made their stops solely at night. That’s the only time of day when the crime rate was high enough to justify aggressive policing. Sandra Bland was pulled over in the middle of the afternoon. "
― Malcolm Gladwell , Talking to Strangers: What We Should Know About the People We Don’t Know