Nadezhda Tolokonnikova, Maria “Masha” Alyokhina, and Yekaterina “Katia” Samutsevich were arrested last year for performing forty seconds of a political song at the altar of a Russian Orthodox church. Who are these cultural vigilantes? They’re Pussy Riot: a Russian feminist punk rock art collective whose members received two years hard labor for their brief, yet anti-Putin, lyrics. Documentarians Mike Lerner and Maxim Pozdorovkin profile these artists and political prisoners in their latest documentary Pussy Riot: A Punk Prayer. The film airs tonight at 9pm (est) on HBO.