A Palestinian artist uses a spray gun as he puts the final touches to a mural depicting the Nakba or "Catastrophe", at the Qalandia Palestinian refugee camp, on May 12, 2014, in the Israeli occupied West Bank as Palestinians mark the 66th anniversary of the Nakba on May 15. Nakba means "catastrophe" in reference to the birth of the state of Israel 66-years-ago in British-mandate Palestine, which led to the displacement of hundreds of thousands of Palestinians who either fled or were driven out of their homes during the 1948 war over Israel's creation. AFP PHOTO / ABBAS MOMANI        (Photo credit should read ABBAS MOMANI/AFP/Getty Images)