The students sat on the ground and sang as police in riot gear approached them. Eventually, more than 100 of them would be arrested; their tents, protest signs and Palestinian flags were gathered into trash bags by the police and thrown away. One video showed officers and university maintenance workers destroying food that had been donated to the encampment, making sure it would be inedible. According to student journalists reporting from WKCR, Columbia University’s student radio station, one arrested student protestor asked the police to be allowed to go to their dorm to collect medication and was denied; as a...