“I’m Anna. I’m in the history department. I want a union because I want to be able to do this work I love and have a safety net.” “I’m Bradley. I’m from Slavic languages. I support a union because dependent health care is outrageously expensive.” On a frigid February afternoon, 60 Columbia University graduate students from anthropology to zoology crowded into a meeting room to brainstorm how to persuade Columbia to recognize and bargain with the labor union they are struggling to form.