WATCH: Mahmoud Khalil, a leader of the anti-Semitic protests that have rocked Columbia University, says "we" couldn't have avoided Hamas's Oct. 7 massacre. "It felt frightening that we had to reach this moment in the Palestinian struggle," he said. "We couldn't avoid such a moment." Later on, Khalil said the attack had to happen "to break the cycle," given that a "Saudi-Israel deal" was "very imminent."