Cambridge mayor Denise Simmons waves to the crowd during the costume parade of the Cambridge Carnival International on Sunday. Mayor Simmons, up for re-election this November, was Grand Marshal of the parade. Vincent Auyeung—The Tech May. 9, 2016 Facebook Twitter Reddit Print Cambridge mayor Denise Simmons waves to the crowd during the costume parade of the Cambridge Carnival International on Sunday. Mayor Simmons, up for re-election this November, was Grand Marshal of the parade. Vincent Auyeung—The Tech