The director of Florence’s Uffizi Galleries called Wednesday for stiff penalties against vandals who spray-painted graffiti on exterior columns of the Varsari Corridor connecting the famed museum to the Boboli Gardens. Political and cultural leaders condemned the graffiti, the latest in a summer of high-profile acts of vandalism targeting Italian monuments, including the Colosseum in Rome and Milan's landmark Vittorio Emmanuele II Galleria.