The chants were in reference to Mahmoud Khalil, a Columbia University graduate student who was detained in March by U.S.

Columbia University acting President Claire Shipman was met with loud boos and chants of "Free Mahmoud" as she took to the ...

Eyewitness video shows people booing university president Claire Shipman during a speech at a graduation event, with some ...

Columbia University acting President Claire Shipman was met with loud boos and chants of "Free Mahmoud" as she took to the stage at a graduation ceremony Tuesday morning. Social media videos and ...

Columbia University acting President Claire Shipman was greeted with boos and chants of "free Mahmoud" as she took the ...