Palestinians take part in a play in commemoration of Nakba Day ''The Day of Catastrophe'' during a rally in Gaza May 1, 2008. Palestinians will mark Nakba on May 15 as a day of mourning for the establishment of Israel after the 1948 Arab-Israeli war which led to the displacement of hundreds of thousands of Palestinians. Reuters Pictures 19 months ago

Palestinians take part in a play in commemoration of Nakba Day ''The Day of Catastrophe'' during a rally in Gaza May 1, 2008. Palestinians will mark Nakba on May 15 as a day of mourning for the establishment of Israel after the 1948 Arab-Israeli war which led to the displacement of hundreds of thousands of Palestinians.