Prosecutors promise 'thorough' investigation into shooting by off-duty sergeant, union calls for 'due process'

In a video of the Thursday shooting in Brooklyn posted by NBC New York, Blake, walking down the street dressed in a pink shirt, is seen turning as Thavone Santana, with his left hand in his pocket and a cast on his right hand, comes up to him. They argue. Blake backs up, while Santana steps toward him.