Police officers put up metal barriers around central Moscow's Manezhnaya Square on March 2, 2022. - Jailed Kremlin critic Alexei Navalny on March 2 urged Russians to stage daily protests against Moscow's invasion of Ukraine, saying the country should not be a "nation of frightened cowards" and calling Vladimir Putin "an insane little tsar." (Photo by NATALIA KOLESNIKOVA / AFP)