Most migrants have much more deeply-rooted reasons to leave everything behind and walk towards the unknown.
Hundreds of Central American migrants who tried to force through a Mexican police blockade into the United States retreated to a nearby camp after US border agents pushed them back with tear gas and rubber bullets.
The mayor of Tijuana declares a humanitarian crisis in his border city and asks the UN for aid to deal with the approximately 5,000 Central American migrants camping out in the city.
Trump had urged that the caravan be detained and repeated his call for stronger border security, writing on Twitter, "Our Southern Border is under siege."
Earlier this year, Mexican police made the grisly discovery of six decapitated bodies in the region as well as the corpses of four more men in the town of Chilapa.
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