Jerusalem has been the scene of violent confrontations between Jews and Arabs for 100 years and remains one of the most bitterly contested cities on earth. The latest clashes began a month ago with an Israeli move to block some Palestinian gatherings at the beginning of the Muslim holy month of Ramadan, already a time of heightened religious sensitivities. After those restrictions eased, tensions over a plan to evict dozens of Palestinians from an east Jerusalem neighborhood continued to fuel confrontations.