In the best of all possible worlds one would hope to find works of art that are both visually engaging and layered with meaning. Of 136 artists or groups of artists featured in the International exhibitions, very few made me pause. One of them was Russia’s Natalia Pershina-Yakimanskaya Gluklya, who contributed a suite of clothes and placards for an anti-Putin demonstration, with many surreal, startling touches. Considering the treatment dished out to the band, Pussy Riot, Gluklya’s work was as politically edgy as anything in the show, but also witty and inventive.