MASKED PALESTINIAN HAMAS MILITANT YOUTH ATTENDS DEMONSTRATION MARKING THE 56TH ANNIVERSARY OF AL NAQBA, OR 'THE CATASTROPHE' IN NABLUS. A masked Palestinian Hamas militant youth attends a demonstration marking the 56th anniversary of Al Naqba, or 'the catastrophe' in the West Bank city of Nablus May 15, 2004. Palestinians mark Al Naqba on May 15 each year, to mark their displacement by the founding of Israeli in 1948. REUTERS/Goran Tomasevic