Vladimir Putin the Russian opposition and by international observers from the Organization for Security and Co-operation in Europe for procedural irregularities. Anti-Putin protests took place during and directly after the presidential campaign. The most notorious protest was the Pussy Riot performance on 21 February, and subsequent trial. An estimated 8,000–20,000 protesters gathered in Moscow on 6 May, when eighty people were injured in confrontations with police, and 450 were arrested, with another 120 arrests taking place the following day. A counter-protest of Putin supporters occurred which culminated in a gathering of an estimated 130,000 supporters at the Luzhniki Stadium, Russia's largest stadium.
Vladimir Putin identified by scholars with Russian conservatism. Putin has promoted new think tanks that bring together like-minded intellectuals and writers. For example, the Izborsky Club, founded in 2012 by Alexander Prokhanov, stresses Russian nationalism, the restoration of Russia's historical greatness, and systematic opposition to liberal ideas and policies. Vladislav Surkov, a senior government official, has been one of the key ideologists during Putin's presidency. In cultural and social affairs Putin has collaborated closely with the Russian Orthodox Church. Patriarch Kirill of Moscow, head of the Church, endorsed his election in 2012 stating Putin's terms were like "a miracle of God." Steven