Student negotiator Mahmoud Khalil on the Columbia University campus in New York at a pro-Palestinian protest encampment on April 29, 2024. Photo: Ted Shaffrey/AP Photo Mahmoud Khalil, a recent Columbia University graduate and green card holder, was an active participant in a political movement on his campus. The political movement called for the university to divest from arms companies and from a state deemed by the International Court of Justice to plausibly be committing genocide. Khalil has not been charged with a crime, let alone convicted. His role in the movement was that of negotiator and mediator with the school’s...