A January 6 rioter who assaulted police officers at the U.S. Capitol with chemical spray and used a megaphone to command fellow rioters to seize officers’ guns received a reduced sentence, reported NBC News — for a surprising reason. “The rioter,Samuel Lazar, has assisted prosecutors with cases against other Capitol rioters, as well as a fellow federal criminal defendant charged in a murder case, the court records show,” reported Ryan J. Reilly. “Lazar, as NBC News first reported, was sentenced at a closed proceeding in March. After having pleaded guilty to assaulting, resisting or impeding ce…