Demonstrators push a dumpster as they clash with riot police during a protest in downtown Sofia on February 17, 2013. The protesters threw rocks, firecrackers, bottles, eggs and tomatoes at the police line manning the headquarters of Czech power producer CEZ and the president's office to protest against sky-high January electricity bills in the EU's poorest country, as the government drags its feet on liberalizing the energy market. DIMITAR DILKOFF/AFP/Getty Images