The protests kicked off following the Saturday arrest of Mahmoud Khalil, when Immigration and Customs Enforcement agents took him into custody at his university-owned residence near Columbia’s

Dozens of University of Chicago students and faculty members rallied on Tuesday in support of a former Columbia University student and pro-Palestinian activist Mahmoud Khalil, who was arrested by federal immigration authorities over the weekend in New York.

President Donald Trump has warned that the apprehension of Mahmoud Khalil, a legal permanent resident, represents the “first arrest of many” as his administration cracks down on campus opposition to the war in Gaza. But a federal judge temporarily blocked the 30 year old’s expulsion from the country.