To the Columbia University administration, As journalists who were trained by Columbia University’s Graduate School of Journalism, and who are steeped in America’s long traditions of free speech and academic freedom, we write to you to express our horror at the events of the past week. The Trump administration has sent immigration enforcers into university-owned student housing and university public spaces at Columbia, has arrested and sought to deport Mahmoud Khalil – not for having committed any documented crimes, but for the thoughts that he has expressed; and has forced another student, Ranjani Srivasan, to flee to Canada after her...