Jewish students at the Massachusetts Institute of Technology say they were prevented from attending classes by a “blockade” of hostile anti-Israel students — and fear the school is “not safe for Jews.” An open letter penned by the MIT Israel Alliance alleges that Jewish and Israeli students were “physically” obstructed from classrooms by a “hostile” pro-Palestinian group called the Coalition Against Apartheid (CAA). “This is after students from the CAA harassed MIT staff members in their offices for being Jewish and interrupted classes in the past few weeks,” the letter read. “Many Jewish students fear leaving their dorm rooms and...