Central American migrants, part of the caravan hoping to reach the U.S. border, begin their morning trek, in Donaji, Oaxaca state, Mexico, Friday, Nov. 2, 2018. The migrants had already made a grueling 40-mile (65-kilometer) trek from Juchitan, Oaxaca, on Thursday, after they failed to get the bus transportation they had hoped for. But hitching rides allowed them to get to Donaji early, and some headed on to a town even further north, Sayula. (AP Photo/Marco Ugarte)