Sometimes great change can be revealed in small gestures. This week Pope Francis knelt on the stone floor of a detention facility in Rome to wash and kiss the feet of 12 young inmates.
Other popes have carried out this rite on Holy Thursday. It is a ceremony to emulate the way Jesus washed the feet of his 12 apostles at the Last Supper, just before he was tried and crucified.
But previous popes have washed the feet of priests in Rome's grand, golden St. John Lateran Basilica. Pope Francis went to a penitentiary to wash the feet of prisoners.