Migrants, mostly from Central America, take trains nicknamed "The Beast" through Mexico to the US border.

Migrants, mostly from Central America, take trains nicknamed "The Beast" through Mexico to the US border.

Credit:

Courtesy of Verso Books

Óscar Martínez, the author of The Beast: Riding the Rails and Dodging Narcos on the Migrant Trail.

Óscar Martínez, the author of "The Beast: Riding the Rails and Dodging Narcos on the Migrant Trail."

Credit:

Courtesy of Verso Books

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