A placard is seen at the site where Kremlin critic Nemtsov was murdered on Friday night in central Moscow

A placard is seen at the site where Kremlin critic Nemtsov was murdered on Friday night in central Moscow

A placard which reads “Boris” with a letter of a soft sign (“Fight”) is seen at the site, where Kremlin critic Boris Nemtsov was murdered on Friday night, in central Moscow March 1, 2015. Holding placards declaring “I am not afraid”, thousands of Russians marched in Moscow on Sunday in memory of Nemtsov, whose murder has widened a split in society that some say could threaten Russia’s future. REUTERS/Sergei Karpukhin (RUSSIA – Tags: CRIME LAW POLITICS CIVIL UNREST)