Feb 3 (Reuters) - The U.S. Justice Department said it formed a multi-agency task force on Monday to fight antisemitism in schools and universities, while the Education Department announced it was investigating five universities for alleged antisemitic harassment. The task force follows an executive order from President Donald Trump in which he warned “resident aliens who joined in pro-jihadist protests” that they would be deported, referring to pro-Palestinian protests on U.S. college campuses. Trump also pledged to revoke the student visas of those he called “Hamas sympathizers.” Many pro-Palestinian protest groups have rejected allegations of supporting extremism.