More info on Pussy Riot here:
In the months since their formation, the eight members of Pussy Riot have perfected their own form of protest: their songs are pithy, angry missives, largely directed at Putin, and they remain beguilingly anonymous – the band wear neon balaclavas to conceal their identities and perform flash gigs in unexpected places: on public transport, for example, and, once, on a prison roof. In mid-January, they pulled off their most audacious show to date: performing on a platform in front of St Basil's Cathedral in Red Square, opposite the Kremlin: "Revolt in Russia – the charisma of protest," they sang. "Revolt in Russia, Putin's got scared!" It was the shortest of performances, only minutes before the authorities hauled the group away, but the point had been made.