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MOSCOW, RUSSIA - FEBRUARY 28: The body of killed Russian opposition leader and former Deputy Prime Minister Boris Nemtsov, covered by plastic, seen on Bolshoi Moskvoretsky bridge near St. Basil cathedral on February 28, 2015 in central Moscow, Russia. Russian opposition leader Boris Nemtsov, a fierce critic of President Boris Yeltsin, was shot dead in central Moscow ahead of a major opposition rally this weekend, investigators and police said. (Photo by Sasha Mordovets/Getty Images)