Governments now answer to business, not voters. Mainstream parties grow ever harder to distinguish. Is democracy dead? Last September, Il Partito Democratico, the Italian Democratic Party, asked me to talk about politics and the internet at its summer school in Cortona. Political summer schools are usually pleasant — Cortona is a medieval Tuscan hill town ...

The Panama Papers—the massive collection of leaked documents from Mossack Fonseca, a Panamanian law firm that helps set up offshore shell corporations—have already had political consequences. Iceland’s prime minister, Sigmundur David Gunnlaugsson, resigned after the leak revealed that he had partly owned an offshore firm. David Cameron, the British prime minister, is facing criticism over ...