Palestinian children from the Aida refugee camp in the West Bank play in front of the security barrier that Israel started building in 2003.
Shortly before Ala' Abu Dhaim picked up a semiautomatic rifle, two pistols and lots of ammunition, he called his 17-year-old fiancée and made plans to go shopping the next day in Jerusalem. They were getting married in the summer and hoped to honeymoon in Turkey before moving into a house near olive groves. But Abu Dhaim, 25, was wrestling with darker forces. After hanging up the phone, he gathered his weapons in a cardboard television box and drove to the Mercaz Harav seminary in the heart of Jerusalem. Abu Dhaim climbed the stairs to a library, where he killed eight students...
