Over the weekend, more than 45 buildings across Athens were set ablaze by violent protesters. The fires began as the Greek Parliament passed a strict package of austerity measures, in an effort to meet demands by the European Union and the International Monetary Fund. The measures, which were prerequisites for a $170 billion bailout, included steep public-sector job cuts and a 20 percent reduction in the minimum wage. More than 80,000 Greeks reportedly demonstrated in the streets of Athens -- among them, a small, violent group that hurled firebombs at riot police and set dozens of fires. More than 120 police and protesters were injured. The next step for the new austerity measures is implementation, and that may face strong opposition as well. Collected here are scenes from a weekend of unrest in Athens. Policemen stand in front of a burning building following violent anti-austerity protests in Athens, on February 12, 2012. Riot policemen stand guard as petrol bombs explode in front of them during clashes with protesters outside the Greek parliament in Athens, Greece, on February 12, 2012. Greek police fired tear gas at petrol bomb-throwing protesters outside parliament, where tens of thousands had massed in a rally against austerity plans being debated by lawmakers.