Article Photos: Pope Francis: Protect the poor and the Earth 33/37

A flag from Argentina waves in the foreground as Pope Francis, bottom, is driven through the crowd prior to his inaugural Mass, in St. Peter's Square at the Vatican, Tuesday, March 19, 2013. Pope Francis thrilled tens of thousands of people on Tuesday gathered for his installation Mass, taking a long round-about through St. Peter's Square and getting out of his jeep to bless a disabled man in a wheelchair in the crowd. (AP Photo/Domenico Stinellis)