Police officers fire tear gas in Rome, Saturday, Oct. 15, 2011. Protesters in Rome smashed shop windows and torched cars as violence broke out during a demonstration in the Italian capital, part of worldwide protests against corporate greed and austerity measures. The "Occupy Wall Street" protests, that began in Canada and spread to cities across the U.S., moved Saturday to Asia and Europe, linking up with anti-austerity demonstrations that have raged across the debt-ridden continent for months. (AP Photo/Gregorio Borgia)