英文字：plutocracy

奇摩字典：富豪統治;財閥政治
維基百科：Plutocracy is rule by the wealthy, or power provided by wealth.
In a plutocracy, the degree of economic inequality is high while the level of social mobility is low.

圖解：

"State of the Union: Congress Meets Wall Street/How Big Corporate Campaign Contributors are Buying America…And What the Rest of Us Pay."

延伸閱讀：After the Wall St Bailout: More Plutocracy, or the Rise of Net-Powered Politics?