Pro-Palestinian protesters barricaded the door of a building on New York’s Columbia University campus early on Tuesday morning, April 30, after the university began suspending students who had failed to leave an encampment.A group of people left the encampment on campus just after midnight and entered Hamilton Hall, the New York Times reported.Footage by X user @Bwop shows the protesters using chair and tables to barricade a door to the building.Images published by the Columbia Daily Spectator, the student newspaper, showed broken windows and masked protesters using barricades and zip-ties to hold doors shut.An NYPD spokesperson told the paper that officers were outside of campus but were not entering. Credit: @Bwog via Storyful