All photographs by Andalusia Knoll. Hear/read her accompanying radio report.
Click on any thumbnail image to launch slideshow.

Members of the Caravan of Central American Mothers march through the crowded streets of downtown Mexico City. (Photo credit: Andalusia Knoll)

Sex workers in Mexico try to help identify missing women based on photographs from the mothers. (Photo credit: Andalusia Knoll)

A woman in the Caravan of Central American Mothers holds a loudspeaker to address the crowd. (Photo credit: Andalusia Knoll)

A Salvadoran member of the COFAMIDE parents’ association carries her national flag and portraits of missing persons. (Photo credit: Andalusia Knoll)

Many of the mothers come from marginalized indigenous communities and don’t have the resources to search on their own for their children. (Photo credit: Andalusia Knoll)

Women from Honduras hold their national flag as they walk with the Caravan of Central American Mothers. (Photo credit: Andalusia Knoll)

The sex worker organization Brigada Callejera hosted a meeting with the mothers on a rooftop in the La Merced market district. (Photo credit: Andalusia Knoll)