The New York Police Department has made multiple arrests after dozens of activists swarmed Trump Tower to protest the immigration detention of a Columbia University activist.Chaotic scenes showed NYPD officers dragging out members of the group Jewish Voice for Peace on Thursday.

US President Donald Trump, in a post Monday on his Truth Social platform, called Khalil a "Radical Foreign Pro-Hamas Student" and announced that his arrest was "the first arrest of many to come".

Mahmoud Khalil's attorneys are challenging his arrest, which raises questions about First Amendment protections for non-citizen protesters.