Clashes broke out Sunday throughout the West Bank on the anniversary of Nakba (an Arabic word which means “catastrophe”), marking the expulsion of hundreds of thousands of Palestinians in 1948. In the Shuafat refugee camp in East Jerusalem, Palestinian youths threw stones at Israeli security forces. Police retaliated by firing rubber bullets and tear gas at the protesters. After several hours, police charged, scattering the Palestinians.

Down an alleyway, “I saw riot police and a group of about ten masked men and a woman—all armed with pistols—detaining a few Palestinians,” said Baz Ratner, a Reuters photographer. In the next few seconds, an Israeli undercover officer dressed as a Palestinian female, jumped into a vehicle and sped away—leaving the detained protesters to the armored riot police.