Chris Detrick | The Salt Lake Tribune Valu Angilau speaks during a press conference at Sykes McAllister Law Offices Thursday September 22, 2016. The parents of Siale Angilau Ñ who was shot to death by a U.S. Marshal two years ago during a federal court trial Ñ filed a lawsuit Thursday against the United States government and the marshal who fired the fatal shots. The lawsuit, filed in U.S. District, claims that Angilau's April 2014 death resulted from a "grossly negligent use of unnecessary, deadly force," which violated Angilau's civil rights.