Columbia University has reportedly barred an Israel-born, Jewish professor from entering the Ivy League’s main campus, where pro-Hamas students have taken over, the New York Post reported.Shai Davidai, an assistant professor at Columbia Business School, has been an outspoken supporter of Israel and called for “a PEACEFUL sit in at Columbia’s declared ‘Liberation Zone’” on Monday morning amid the ongoing protests at the New York university.Anti-Israel students set up an encampment on the lawn at... Read this story