Atop A Train, Migrants Begin Dangerous Trek To U.S.

The trip for these migrants, mostly from Central America,  has become increasingly dangerous over the past several years as Mexico's drug war has raged. Kidnappings and killings of migrants have increased.
The trip for these migrants, mostly from Central America, has become increasingly dangerous over the past several years as Mexico's drug war has raged. Kidnappings and killings of migrants have increased.