Protesters burn papers and throw stones at riot police during a protest at the University Square in Bucharest, January 15, 2012. Thousands of Romanians gathered on Sunday in capital Bucharest and large cities across the country for a fourth consecutive day of protests that started out against a controversial healthcare reform bill and widened to government austerity measures. REUTERS/Bogdan Cristel (ROMANIA – Tags: BUSINESS POLITICS CIVIL UNREST)