The federal criminal case against former Memphis police officers charged in the fatal beating of Tyre Nichols has taken a shocking, unusual twist: Three of them are getting a new trial because a judge made comments after their convictions that raised questions of bias. On Thursday, U.S. District Judge Sheryl H. Lipman ordered a new trial for Tadarrius Bean, Demetrius Haley and Justin Smith. Lipman wrote that U.S. District Judge Mark S. Norris, who presided over the trial, raised “the risk of bias” when he commented in May that at least one of the officers could be in a gang, and that gang may have been responsible for shooting his law clerk.