Sister Bertha Lopez Chaves applies anti-inflammatory eyedrops to a migrant at a stadium in Mexico City where the caravan is resting. Her order is one of roughly 50 groups giving aid to the migrants in the Mexican capital. “We’re just trying to deal with their basic needs so they can continue on,” she says.

Sister Bertha Lopez Chaves applies anti-inflammatory eyedrops to a migrant at a stadium in Mexico City where the caravan is resting. Her order is one of roughly 50 groups giving aid to the migrants in the Mexican capital. “We’re just trying to deal with their basic needs so they can continue on,” she says.