Pope Francis holds up a T-shirt decorated with his photo and the Portuguese word "Memory" toward the crowd in the Varginha area of the Manguinhos slum complex in Rio de Janeiro, Brazil, Thursday, July 25, 2013. Francis on Thursday visited one of Rio de Janeiro's shantytowns, or favelas, a place that saw such rough violence in the past that it's known by locals as the Gaza Strip. (AP Photo/Silvia Izquierdo)