A 1% enjoy a fifth of the economy's income and pay nearly a third of its federal taxes. Many politicians think they should cough up much more. Zohran Mamdani, New York's mayor, wants a new 2% city levy on incomes over $1m. Virginia, Rhode Island and Washington state are weighing up similar measures; Californians are likely this year to vote on a "one time" 5% levy on billionaires' wealth. In Europe, too, there is a similar clamour to target the wealthy. France has seen a popular campaign for a wealth tax. And with Sir Keir Starmer weakened or doomed as prime minister, the left wing of Britain's Labour Party may implement one of its own.
