(Mosaic Alert: March 16, 2010) Clashes erupted between Israeli police and Arab protesters on Tuesday in East Jerusalem, further heightening tensions that have already threatened to stifle the budding U.S. peace-making efforts. Earlier, Hamas, the Palestinian Islamist movement, announced a "day of rage" after Monday's reopening of a synagogue in Jerusalem's Old City. According to sources working in hospitals in East Jerusalem, the total number of Palestinians injured in the clashes has exceeded 60, over half of which were in the city of Al Eisawiya.