Read our Privacy noticeMothers, fathers, brothers, sisters and friends gather along the Moroccan side of the border with the Spanish territory of Ceuta, scanning for familiar faces. Each returning migrant is met with the question: Have you seen my son? Authorities say all but a few thousand of the 72,000 migrants who crossed into Ceuta in recent days have since returned to Morocco. Nearly all of the migrants who survived were expelled by Spanish authorities or returned voluntarily after seeing they were unwelcome. Facebook groups that had circulated videos showing where to swim and tracking Spanish and Moroccan patrols have now taken on a different purpose.