A woman holds a cross during a mass held as part of Palm Sunday celebrations on March 24, 2013 in Bogota. 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. It is traditionally marked by a procession and special mass. AFP PHOTO/Luis Acosta