In Paris on Sunday, supporters of newly elected president Francois Hollande celebrated. Joel Saget /AFP/Getty Images hide caption

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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

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