The Euthanasia of the Rentier should be the economic slogan of progressives.

Oh sure, in this NYT op-ed, Greg Mankiw shamelessly fiddles with numbers to try to show that raising taxes on rich people like him will be bad for the economy. But you don’t even have to point out the obvious flaws in his math to read this op-ed as an unrestrained argument in favor of raising taxes on the rich.