A Palestinian schoolgirl walks past Israeli border police officers on her way home from school during clashes between Israeli troops and Palestinian stone-throwers in the Shuafat refugee camp in the West Bank near Jerusalem March 16, 2010. Palestinians mounted violent protests in Jerusalem on Tuesday and President Barack Obama's Middle East envoy cancelled plans to return to the region as a U.S.-Israeli crisis over Jewish settlement plans deepened. REUTERS/Ammar Awad (WEST BANK - Tags: CIVIL UNREST MILITARY POLITICS IMAGES OF THE DAY) FOR BEST QUALITY IMAGE: ALSO SEE GM1E63M1O9001.