Dozens of anti-Israel protesters infiltrated a school library at Barnard College, displaying Palestinian flags and handing out pamphlets that appeared to come from Hamas.

At around 1 p.m. on Wednesday, the masked protesters flooded the Milstein Center to express their outrage over the expulsion of three students. Two of the students were expelled for handing out fliers during an Israeli studies class in January containing what the university called “violent imagery.” The other student was expelled for last spring’s occupation of Hamilton Hall.