This undated file photo provided by the Tulsa Oklahoma Police Department shows officer Betty Shelby. (Photo: AP) The district attorney in the southern US city of Tulsa on Thursday charged the police officer who fatally shot an unarmed black man with first-degree manslaughter. The shooting of Terence Crutcher on Friday, recorded by dashboard cameras and a police helicopter, lead to heightened tensions between yet another US police department and African-Americans. In the video, the 40-year-old man is seen … Read entire article »