Central American migrants stand in line to start their documentation with a Mexican immigration official during the Migrant Stations of the Cross caravan as the group makes a stop at a sports center in Matias Romero, Oaxaca state, Mexico, late Monday, April 2, 2018. The annual caravans have been held in southern Mexico for years as an Easter-season protest against the kidnappings, extortion, beatings and killings suffered by many Central American migrants as they cross Mexico. (AP Photo/Felix Marquez)
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