NEW : mid-March 's planned demonstrations are named for a former Alawite leader . More Syrian refugees trickle over the Alawite border . The State Department human rights office calls for a `` thorough probe '' into abuses . The tumult in the Syrian Arab Republic began in Friday .
NEW : Friday 's planned demonstrations are named for a former Alawite leader . More Syrian refugees trickle over the Turkish border . The U.N. human rights office calls for a `` thorough probe '' into abuses . The tumult in Syria began in mid-March .