<p><br /> People have laid flowers and lit candles to commemorate the lives of three bank workers killed after Greek anger over new austerity measures erupted into riots.<br /> </p><p><br /> Protesters denouncing the latest economic reforms threw petrol bombs at a bank branch in Athens on Wednesday.<br /> </p><p><br /> Tens of thousands of Greeks took to the streets of the capital, clashing with police, who responded with repeated rounds of tear gas and flash bombs.<br /> </p><p><br /> Three people, including a pregnant woman, died in the worst violence the country has seen since riots in 2008.<br /> </p><p><br /> Police say the two women and a man, aged between 30 and 40, working in a Marfin bank branch, choked to death after protesters broke the windows of the building and tossed in petrol bombs.<br /> </p><p><br /> The rioting and deaths are a blow to the Greek's Prime Minister's plans to push through tough budget cuts demanded by the European Union and International Monetary Fund in exchange for a multi-billion euro aid package.<br /> </p><p><br /> George Papandreou has expressed shock at the deaths and vowed to bring those responsible to justice.<br /> </p>