I would call fiat currencies, in particular fiat currencies that expand the monetary base/supply far greater than the increase of goods and services created, for "wealth appropriation schemes"; which with a very simplistic explanation appropriates the "wealth" of workers who receive wages in a depreciating currency, whereas bankers and the financial class do not suffer due to earning interest on the expanded monetary base/supply and thus although their "wealth" in the shape of currency also depriciates, their "wealth" is also expanded.