Updated at 5:15 p.m. ET
With chants of "families united" and "free our children now," hundreds of people marched to the tent city in Tornillo, Texas, where children have been detained for immigration violations.
The Father's Day march near El Paso was primarily organized by Democratic Rep. Beto O'Rourke of Texas, who is also running for Senate against Ted Cruz. He says the march was the brainchild of Veronica Escobar, who is running to fill his seat in the House, as well as other community leaders.