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.
Cathedral of the Annunciation, Moscow and four single-cupola side chapels were built over the arched parvises, each with a dome, so that the cathedral is now a total of nine domes. In 1572, the cathedral received an additional staircase on its south facade, later called "Grosnenski"), named after Ivan the Terrible (Russian for "Ivan Grozny"). Many of the church treasures were lost during the occupation of Moscow by the armies of the Polish–Lithuanian Commonwealth in 1612 at the close of the Time of Troubles. It was also damaged by the great Kremlin fire of 1737. During the French occupation of Moscow in 1812, the cathedral