She sits on stage dressed in black, smoking an e-cigarette, her blond, curly hair flowing down from her thick knit cap. The unrelenting Maria Alyokhina, a 37-year-old activist and performance artist best-known as a member of Pussy Riot , is presenting her new book "Political Girl: Life and Fate in Russia " in Cologne as part of the literary festival lit.COLOGNE. Maria Alyokhina is one of several women who staged a protest the evening before Vladimir Putin was reelected president of Russia — a