The encampment at Columbia University is entering its seventh day despite mass arrests of protesters there last week. : The encampment at Columbia University is entering its seventh day despite mass arrests of protesters there last week. Palestinian solidarity protests and encampments are appearing on college campuses from Massachusetts to California to protest Israel’s attacks on Gaza and to call for divestment from Israeli apartheid. This week, police have raided encampments and arrested students at Yale and New York University.