A demonstrator, who set himself on fire after misthrowing a molotov cocktail, reacts during clashes with Israeli security forces following a demonstration to mark the 67th anniversary of the 'Nakba' near the Israeli Ofer prison, in the West Bank village of Betunia near Ramallah on May 15, 2015. 'Nakba' means in Arabic 'catastrophe' in reference to the birth of the state of Israel 67-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)