CHAMPAIGN â A federal judge denied a motion to dismiss the indictment against Shamar Betts, who prosecutors have charged with using Facebook to incite a riot this spring at Market Place Mall. Federal Public Defenders Elisabeth Pollock and Thomas Drysdale had argued that the Federal Anti-Riot Act was unconstitutional because it criminalizes protected First Amendment speech and doesnât apply to Bettsâ case. U.S. District Judge Michael M. Mihm said in a decision issued Monday that he was bound by precedent, which has upheld the law. He also concluded that the law wasnât unconstitutionally vague, as Bettsâ lawyers had argued.