A man holds a portrait of Pope Francis on sale, outside the Holy Basilica on March 24, 2013 in Nairobi. Pope Francis kicked off his Palm Sunday ceremony in front of thousands of faithful by touring Saint Peter's Square in an open jeep. For Christians, Palm Sunday marks the beginning of Holy Week, and commemorates Christ's triumphant entry into Jerusalem on the back of a donkey, welcomed by crowds waving palm branches, before his arrest, trial, crucifixion and resurrection. AFP PHOTO / SIMON MAINA