Anti-government protesters celebrate inside Tahrir Square after the announcement of Egyptian President Hosni Mubarak's resignation in Cairo, Egypt, February 11, 2011. Picture taken February 11, 2011. REUTERS/Amr Abdallah Dalsh/File Photo SEARCH "POY DECADE" FOR THIS STORY. SEARCH "REUTERS POY" FOR ALL BEST OF 2019 PACKAGES. TPX IMAGES OF THE DAY.