Footage of fatal shootings between police officers and the mentally ill shows how quickly these encounters can go wrong. (These videos include graphic scenes of violence.) March 16, 2014 Sandia Foothills, Albuquerque James Boyd, 38, had a history of mental illness. He was camping when officers approached him. He became irate and produced a knife. Officers Keith Sandy and Dominique Perez were charged with the second-degree murder. June 14, 2014 Dallas Jason Harrison, 38, was a bipolar schizophrenic, according to his mother. She called the police saying he was making violent threats and asked to help get him to the hospital. Officers John Rogers and Andrew Hutchins didn’t face criminal prosecution. July 12, 2015 Denver Paul Castaway was confronted by police officers after his mother reported he was mentally ill and threatened her. A foot chase ensued and Mr. Castaway pointed a large knife at his throat. Officer Michael Traudt didn’t face any charges.