Some 3,000 police fanned out around Paris on Saturday to counter feared weekend attacks on high-profile targets in the capital as the number of vehicles torched overnight rose slightly elsewhere in France, officials said. Two Molotov cocktails were tossed into a mosque in the southern city of Carpentras, slightly damaging the porch, local officials said. It was not immediately clear whether the attack was linked to the unrest that has racked the poor suburbs and towns of France since Oct. 27. Some two weeks ago, tear gas fumes that invaded a mosque in northeast Paris suburb, Clichy-sous-Bois, where violence started,...