VENICE, Italy (AP) — Russian punk group Pussy Riot and members of Ukrainian feminist organization FEMEN swarmed the Russian Pavilion at the Venice Biennale under a cloud of pink, blue and yellow smoke to protest Russia’s participation at the world’s oldest international art exhibition. Their faces covered with pink balaclavas and shouting “Blood is Russia’s art” and “Disobey,” 50 members of feminist groups opposed to Russian President Vladimir Putin blockaded the highly controversial pavilion for at least half an hour while Italian police prevented them from getting inside. They chanted, played a punk rock song and dispersed without confrontation.…