Italy’s most notorious art vandal has struck again. “Piero Cannata, who earned worldwide notoriety by taking a hammer to Michelangelo’s David, confessed to local newspapers in Tuscany that he had struck again in the very centre of Florence. It was discovered that somebody had sprayed a thick black “x” on a plaque, set into the paving of Piazza della Signoria, commemorating the burning to death of the 15th-century preacher and reformer Girolamo Savonarola.”