The Police Department in Tulsa, Okla., released video on Monday of an encounter during which, the authorities said, a white police officer fatally shot an unarmed black man who could be seen raising his hands above his head. The department opened a criminal investigation into the shooting and said the Tulsa County district attorney, Steve Kunzweiler, would review its findings. The federal Justice Department opened a separate civil rights investigation. During the encounter, which took place around 7:40 p.m. Friday, Terence Crutcher, 40, was shot once and killed by Betty Shelby, a Tulsa police officer since 2011, after the police...