Having flown in from Minneapolis yesterday from visiting family, Fair Street School Principal William Campbell has watched as the violent events unfolded over recent days in Louisiana, Minnesota and Dallas. “As people, we need to continue to treat each other civilly and give everyone the benefit of the doubt,” Campbell said. One man, Philando Castile, 32, was killed after a traffic stop in St. Paul, Minn., the second notable shooting by police in a week.