Political career of Vladimir Putin personally congratulated Putin on his victory, calling Putin "a driving force behind strategic ties of cooperation between Venezuela and Russia." Anti-Putin protests took place during and directly after the presidential campaign. The most notorious protest was the 21 February Pussy Riot performance, and subsequent trial. Also, 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. Putin was inaugurated in the Kremlin on 7 May 2012. On his first day as President, Putin issued 14 Presidential decrees, including
Camps for Russian prisoners and internees in Poland (1919–24) were also exchanged among two sides. Ekaterina Peshkova, the chairwoman of organization "Assistance to Political Prisoners" (Pompolit, "Помощь политическим заключенным", Помполит), was awarded an order of Polish Red Cross for her participation in the exchange of POWs after the Polish-Soviet War. During the memorial ceremony for the victims of the Katyn massacre on April 7, 2010, attended by the Russian and Polish Prime Ministers Vladimir Putin and Donald Tusk, Putin said that, in his private opinion, Stalin (whose refusal to obey orders from the Kremlin resulted in the Russian defeat against Poland in 1920) felt personally responsible for this tragedy,