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 here by Jessica Schwalb shows window panes on doors being smashed at Hamilton Hall to allow a bike lock be placed around the outer handles. Credit: Jessica Schwalb via Storyful