Flowers are pictured on the grave of anti-corruption lawyer Sergei Magnitsky at the Preobrazhensky cemetery in Moscow March 11, 2013. Russian prosecutors portrayed whistleblower Magnitsky as a money-hungry schemer who used mentally disabled people to avoid paying taxes, in a case that has highlighted human rights concerns following Vladimir Putin's return to the presidency. Picture taken March 11, 2013. To match RUSSIA-MAGNITSKY/ REUTERS/Mikhail Voskresensky (RUSSIA - Tags: CRIME LAW POLITICS)