Palestinians carry their national flag and pictures of the late Palestinian leader Yasser Arafat (R) and Palestinian President Mahmoud Abbas (L) during a march to mark the 61st anniversary of Nakba in Beirut May 15, 2009. Palestinians mark Nakba as a day of mourning for the establishment of Israel in 1948 after which an Arab-Israeli war brought the displacement of hundreds of thousands of Palestinians. Reuters Pictures logo Reuters Pictures 33 months ago

Palestinians carry their national flag and pictures of the late Palestinian leader Yasser Arafat (R) and Palestinian President Mahmoud Abbas (L) during a march to mark the 61st anniversary of Nakba in Beirut May 15, 2009. Palestinians mark Nakba as a day of mourning for the establishment of Israel in 1948 after which an Arab-Israeli war brought the displacement of hundreds of thousands of Palestinians.