(People fill St. Peter's Square at the Vatican, Tuesday, March 19, 2013. Pope Francis officially began his ministry as the 266th pope on Tuesday in an installation Mass simplified to suit his style, but still grand enough to draw princes, presidents, rabbis, muftis and thousands of ordinary people to St. Peter's Square to witness the inauguration of the first pope from the New World. (AP Photo/Riccardo De Luca))
