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ATHENS, GREECE - MAY 8: Protesters chant slogans during an anti-austerity rally in front of the Parliament on May 8, 2016 in Athens, Greece. Protesters hurled firebombs at police in front of Parliament before a controversial vote on an austerity bill. (Photo by Milos Bicanski/Getty Images)

ATHENS, GREECE - MAY 8: Protesters chant slogans during an anti-austerity rally in front of the Parliament on May 8, 2016 in Athens, Greece. Protesters hurled firebombs at police in front of Parliament before a controversial vote on an austerity bill.  (Photo by Milos Bicanski/Getty Images)