A pro-Palestinian activist on the University of Michigan’s campus recently posted what experts described as “an overtly threatening” photo of himself wearing a traditional Arab headscarf and jamming a knife into a pineapple. The emergence of the photo comes just days after Palestinian activists on the University of Michigan’s campus leveled death threats and racial epithets at pro-Israel students who opposed a resolution to divest from Israel. Pro-Palestinian campus activists, angered by the student government’s recent decision to reject their divestment measure, leveled death threats at one student and have reportedly called other pro-Israel students “dirty Jew” and “kike.” The...