Article Photos: Arab world searches for democratic future 3/12

FILE - In this Saturday, Jan. 22, 2011 file photo, police officers celebrate the ouster of their president as they demonstrate in Tunis. Almost a quarter-century ago, a young American political scientist achieved global academic celebrity by proclaiming that the collapse of communism had ended the discussion on how to run societies, leaving "Western liberal democracy as the final form of human government." In Egypt and around the Middle East, after a summer of violence and upheaval, the discussion, however, is still going strong.  And almost three years into the Arab Spring revolts, profound uncertainties remain.  (AP Photo/Christophe Ena, File)