Holding placards declaring "I am not afraid", thousands of Russians marched in Moscow on March 1 in memory of Kremlin critic Boris Nemtsov, whose murder has widened a split in society that some say could threaten Russia's future.
France 24: Thousands of Russians march in memory of murdered Putin critic
Russia's opposition supporters carry portraits of Kremlin critic Boris Nemtsov during a march in central Moscow on March 1, 2015.
