New York CNN  —  Not long after the October 2023 Hamas attacks in Israel and subsequent war in Gaza, Ross Glick’s inbox flooded with tips, photos, video and information about students and faculty members participating in pro-Palestinian protests on US college campuses. As many protesters rallied against Israel’s military response and demanded a ceasefire, Glick – a pro-Israel activist – focused on the emails and would temporarily join New York-based Betar USA, a self-described Zionist advocacy