A Minnesota police officer, whose fatal shooting of African American motorist Philando Castile of a traffic stop transfixed the nation as his girlfriend livestreamed the aftermath, was acquitted of all charges on Friday The case was extraordinary in Minnesota — it is believed to be the first time in the state’s history that an officer was charged in an on-duty fatal shooting — and was closely watched by police officers and protesters.The trial took place amid a national debate over whether officers can or should be convicted of crimes. In Tulsa, Okla., Officer Betty Jo Shelby was acquitted of manslaughter last month in the fatal shooting of an unarmed African American male. Officers were also standing trial this week in fatal shootings in Cincinnati and Milwaukee. New York Times