Columbia University public safety officers confronted dozens of pro-Palestinian protesters who gathered in an area of the main library on campus Wednesday afternoon, with protesters being shoved and blocked from the library doors,

Columbia University public safety officers clashed with pro-Palestinian demonstrators occupying part of the main library on campus Wednesday afternoon.

The protesters, wearing masks and kaffiyehs, hung banners in the soaring main room of Butler Library’s second floor, renaming the space “the Basel Al-Araj Popular University,” according to the demonstrators and witnesses at the library.