Dozens of people were taken into custody during protests at Columbia University on Wednesday, and the school is once again limiting access to its campus. Only those with a university ID or approved faculty guests are allowed past checkpoints Thursday,

New York City police took 80 people into custody after responding to protests on Columbia's campus, the police department said.

The New York Police Department arrested 61 females at Columbia University on Wednesday as anti-Israel agitators stormed the Butler Library.