Between classes, when throngs of students stream into and out of Columbia University ’s campus, the security lines can back up like a TSA checkpoint. There’s a switch-back path of metal fencing that leads into a white tent, where two sets of guards check and then swipe campus ID cards before letting students in and out.

New video shows the arrest of Columbia University pro-Palestinian activist Mahmoud Khalil by Immigrations and Custom Enforcement agents.

Protests erupted at Columbia University on Friday (March 14) as demonstrators demanded the release of student activist Mahmoud Khalil. Sherry Wolf, a union organizer said she was "horrified" by Khalil's deportation.