By now, 23 million American college and university students will mostly be back on campus. Undergraduates have stuffed suitcases and crammed one more thing into already bursting backpacks, and moved into dorm rooms and apartments. Graduate students have scrambled to prepare for seminars and their work in classrooms and laboratories and started the new academic year. But not our children. Our children are among the more than 100 students at Columbia University who have been arrested, suspended or expelled for protesting against the most documented genocide in human history. While Israel starves 2.1 million Palestinians to death with US support,...