There were some high-profile people in Pittsburgh over the weekend👀 Hillary Clinton, Bernie Sanders and Elizabeth Warren were among the key note speakers at the American Federation of Teachers national convention at the David L. Lawrence Convention Center. (Photos by Lake Fong, Pam Panchack and Rebecca Lessner/Post-Gazette) #Pittsburgh #PGH #412 #HillaryClinton #BernieSanders #ElizabethWarren #unions #teachers #teachersconvention #AmericanFederationofTeachers #PGPhotos