DAVOS, Jan. 21 -- More than 360 affluent individuals, including actor Mark Ruffalo and musician Brian Eno, have signed an open letter urging governments worldwide to impose higher taxes on millionaires and billionaires. The letter, addressed to world leaders attending the World Economic Forum in Davos, seeks to curb the influence of extreme wealth on politics, media, and society.

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Titled 'Time to Win', the letter claims that a small group of global oligarchs has "bought up our democracies, taken over our governments, gagged the freedom of our media, placed a stranglehold on technology and innovation, deepened poverty and social exclusion, and accelerated the ...