Pro-Palestinian demonstrator Mahmoud Khalil, second left, debates with a pro-Israel activist during a protest at Columbia University in New York, in October 2023. AP
Pro-Palestinian demonstrator Mahmoud Khalil, second left, debates with a pro-Israel activist during a protest at Columbia University in New York, in October 2023. AP

Trump calls detained activist Mahmoud Khalil 'radical foreign pro-Hamas student'