Demonstrators clashed with riot police in Athens overnight. Aris Messinis /AFP/Getty Images hide caption

itoggle caption Aris Messinis /AFP/Getty Images

Communist party lawmaker Liana Kanelli enters her car after protesters threw yogurt on her face as she tried to reach the Greek parliament during a 48-hour general strike in Athens in 2011. STR/AFP/Getty Images hide caption

itoggle caption STR/AFP/Getty Images