On Sunday, Tisha b’Av—the traditional day of mourning for the destruction of the two Jerusalem Temples—coincided with the Muslim festival of Eid al-Adha. While the Israeli government had initially banned Jews from the Temple Mount on that day, it later reversed its decision and allowed a few dozen to visit. Muslim worshippers greeted them by throwing chairs and stones, and police had to quell the riot by force. Just yesterday, an Israeli policeman was stabbed nearby. Maurice Hirsch and Itamar Marcus place the blame for Sunday’s violence squarely on the shoulders of the Palestinian Authority: