(Portland, OR) -- Cleanup continues at Portland State University's Miller Library following a days-long occupation by protesters of the Israel-Hamas war. KATU-2 reports the library suffered heavy vandalism and graffiti and was covered in piles of trash, tents and wooden pallets. Portland police officers in riot gear descended on the library a second time last Thursday night after activists who had been removed from the premises earlier that day allegedly broke back into the building. At least 30 people are facing charges. The activists were among thousands around the U.S. holding demonstrations and occupations at college campuses to call for a cease-fire from Israel and an end to U.S. aid to the nation's war efforts.