Conceived by Wilfredo Prieto as his project for the Compositions programme, Pantalones rotos (Torn Jeans), 2012, is realised by the horses of the Guàrdia Urbana de Barcelona. The action-sculpture takes place at the Mounted Unit’s stables, a historic venue next to the city zoo that is not normally open to the public and whose exercise paddock is overlooked by the twin towers of the Torre Mapfre and Hotel Arts. In his work Prieto makes reference to an image which appears on the tag of every pair of classic Levi’s denim jeans—two horses trying in vain to break a pair of the reinforced trousers. Since their invention in 1873, Levi Strauss & Co.’s famous copper-riveted denim has become synonymous with the working people of the western United States—cowboys, lumberjacks, and railroad workers. Yet in Pantalones rotos, this symbol of the American frontier myth has been already torn apart with bathos as two harnessed horses each drag one half of a torn pair of jeans.