Palestinians rally along the Rafah border terminal between Egypt and the southern Gaza Strip, on May 15, 2011, during a gathering to mark the 63th anniversary of the "Nakba" (catastrophe). Nakba means "catastrophe" in reference to the birth of the state of Israel 63 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. Photo by Abed Rahim Khatib