A leader of the pro-Palestinian protests at Columbia University had a video emerge on social media this week, threatening violence to “Zionists.” “Zionists don’t deserve to live,” student Khymani James said in a video from January. He is also heard saying “Be grateful that I’m not just going out and murdering Zionists.” The remarks happened around the time James had a meeting with school officials over a social media post about fighting a Zionist. “I don’t fight to injure or for there to be a winner or a loser, I fight to kill,” he said. In a post Friday on...