'We care': Family separation protests flood US cities

In Washington, D.C., another massive crowd gathered in Lafayette Park across from the White House in what was expected to be the largest protest of the day, stretching for hours under a searing sun. Firefighters at one point misted the crowd to help people cool off.

Lin-Manuel Miranda, creator of the musical "Hamilton," sang a lullaby dedicated to parents unable to sing to their children. Singer-songwriter Alicia Keys read a letter written by a woman whose child had been taken away from her at the border.

"It's upsetting. Families being separated, children in cages," said Emilia Ramos, a cleaner in the district, fighting tears at the rally. "Seeing everyone together for this cause, it's emotional."Around her, thousands waved signs: "I care," some read, referencing a jacket that first lady Melania Trump wore when traveling to visit child migrants. Her jacket said, "I really don't care, do U?" and it became a rallying cry for protesters Saturday.