A self-proclaimed white supremacist admitted to making online threats to jurors and witnesses involved in the federal hate crimes trial of Robert Bowers, the gunman who killed 11 people at the Tree of Life synagogue in Pittsburgh nearly five years ago. Hardy Carroll Lloyd, of Follansbee, W.Va., pleaded guilty Tuesday to obstruction of the due administration of justice, the U.S. Department of Justice said. Lloyd, 45, is a self-proclaimed “reverend” of a white supremacy movement, according to federal officials. He admitted to distributing threatening social media posts, website comments, and emails during Bowers’ trial earlier this year. Sixty witnesses were...