Palestinian children wear masks and hold wooden guns, during a demonstration organized by Islamic Jihad marking what some Arabs call the "nakba," or catastrophe, the word they use to describe Israel's establishment which resulted in the displacement of hundreds of thousands of Palestinians, in Gaza City, Thursday, May 15, 2008. Palestinians marked the 60th anniversary of their uprooting with rallies, sirens and black balloons Thursday, an annual ritual that turned even darker this year because of crippling internal divisions, diminishing independence hopes and the stark contrast to Israel's all-out birthday bash. AP Photo logo AP Photo 13 months ago

Palestinian children wear masks and hold wooden guns, during a demonstration organized by Islamic Jihad marking what some Arabs call the "nakba," or catastrophe, the word they use to describe Israel's establishment which resulted in the displacement of hundreds of thousands of Palestinians, in Gaza City, Thursday, May 15, 2008. Palestinians marked the 60th anniversary of their uprooting with rallies, sirens and black balloons Thursday, an annual ritual that turned even darker this year because of crippling internal divisions, diminishing independence hopes and the stark contrast to Israel's all-out birthday bash.