Grant Miner, a Columbia University graduate student who was expelled earlier this month for overtaking Hamilton Hall, gave a speech on campus on Thursday, telling anti-Israel protesters they had to "fight back." Miner, the president of Columbia's graduate student union, Student Workers of Columbia, led a chant before giving the speech on the steps of Low Library, an administrative building. The union organized the protest, demanding "No research cuts. No ICE. No censorship. No layoffs." "Our