In this photo taken on Monday, Feb. 15, 2016, Pope Francis celebrates a Mass in San Cristobal de las Casas, Mexico, Monday, Feb. 15, 2016. Francis celebrated Mexico's Indians on Monday with a visit to Chiapas state, a center of indigenous culture, where he presided over a Mass in three native languages thanks to a new Vatican decree approving their use in liturgy. (L'Osservatore Romano/Pool Photo via AP)