Wrapped up against Russia's midwinter in vivid balaclavas, brightly coloured minidresses and not much else, eight members of an all-girl punk group stood on a platform in Red Square and started an impromptu show. "Riot in Russia!" they screamed, before taunting Prime Minister Vladimir Putin and urging Russians to hit the streets in protest. The band, Pussy Riot, has been gaining Internet notoriety after their January 20 gig of sorts, the latest in a string of impromptu performances to protest Putin's candidacy for the presidency.