Activists hold a rally and march through downtown to show support for Mahmoud Khalil on March 11, 2025 in Chicago, Illinois. Khalil, a pro-Palestine activist and recent graduate of Columbia University, was arrested by immigration officers in New York on Saturday and sent to a detention center in Louisiana. According to his lawyer, he is a lawful resident, holding a U.S. green card. (Photo by Scott Olson/Getty Images)
