The right to asylum has been enshrined in US law since the 1950s. It’s meant to provide a safe haven for people fleeing violence and government persecution. 

Laura Ascencio Bautista and her family have faced both in Mexico, where her brother Benjamin disappeared along with 42 others in 2014 after police stormed a bus from the Ayotzinapa Rural Teachers’ College.

In the years since, violence in her home state of Guerrero left Bautista desperate. She heard asylum was created for people like her. So she traveled north, headed for the perceived safety of the United States.

“I was told that if I went to the US border and told my family’s story and how it’s not safe back home, the United States could protect me,” she said.

Despite all the political hand-wringing about a crisis at the border, many Americans don’t understand what’s driving so many people from Mexico and other countries to come to the US in the first place. This week, Reveal senior reporter and producer Anayansi Diaz-Cortes takes us to a part of Mexico that many families are leaving behind—a place where fear is a part of daily life—and unwinds US policies that helped trigger the cycle of violence and migration that continues to this day.