Nuns arrive before Pope Francis celebrates an open-air mass in Ecatepec --a rough, crime-plagued Mexico City suburb-- on February 14, 2016. Pope Francis has chosen to visit some of Mexico's most troubled regions during his five-day trip to the world's second most populous Catholic country. AFP PHOTO/GABRIEL BOUYS / AFP / GABRIEL BOUYS
{"Image ImageDescription": "Nuns arrive before Pope Francis celebrates an open-air mass in Ecatepec --a rough, crime-plagued Mexico City suburb-- on February 14, 2016. Pope Francis has chosen to visit some of Mexico's most troubled regions during his five-day trip to the world's second most populous Catholic country.   AFP PHOTO/GABRIEL BOUYS / AFP / GABRIEL BOUYS        (Photo credit should read GABRIEL BOUYS/AFP via Getty Images)"}