In Alwan’s case, investigators said the unsigned op-ed in the Columbia Spectator, which also urged the school to curtail academic ties to Israel, may have subjected other students to “unwelcome conduct” based on their religion, national origin or military service.

"Agitators will be imprisoned/or permanently sent back to the country from which they came."He continued: "American students will be permanently expelled or, depending on the crime, arrested. NO MASKS!

Columbia University faces backlash for investigating students critical of Israel, raising concerns about free speech and discrimination.

Columbia's new disciplinary committee faces backlash as critics say it bows to pressure, including Trump's threats to cut funding and deport student protesters.