Case Adds to Outrage for Muslims in Northern Virginia By JAMES DAO and ERIC LICHTBLAU ALLS CHURCH, Va., Feb. 25 - When the Saudi police burst into a classroom at the Islamic University of Medina during final exams two years ago and whisked away an American exchange student named Ahmed Omar Abu Ali, his imprisonment swiftly reverberated among Muslims in this Washington suburb. Mr. Abu Ali was never charged, and he spent 20 months in a Saudi prison where his family says he was whipped, tortured and starved. This week, he was finally returned to Virginia - only to face...