When three terrorists killed two Israeli policemen on Jerusalem’s Temple Mount on July 14, thereby precipitating a chain of further Arab violence that has not yet abated, what shook Israelis was not just the fact that the crime was committed at Judaism’s holiest site; it was that it originated within Israel’s pre-1967 borders and was committed by Israeli citizens. The murderers were residents of Umm al-Fahm, Israel’s third largest Arab city. No wall or checkpoint separates its residents from the rest of the country; yet it is a base for Islamist anti-Zionist politics.