July 13, 2015 7:48 am NAACP Celebrates History in Philadelphia The NAACP annual convention continues Monday at the Pennsylvania Convention Center. NBC10’s Katy Zachry has a preview of the day’s events. US & World Videos 2:26 Pro-Palestinian protest and encampment continues at Drexel University 2:44 Mayor Parker announces city workers will return to office full-time in the summer 25:15 WATCH: Mayor Cherelle Parker announces all city workers will return to office full-time this summer 1:55 Penn students graduate amid extra security after an academic year full of unrest 11:16 Another campus protest in Philly: The Lineup