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Why worry about inequality? Cass Sunstein, May 15, 2014, Opinion. "Thomas Piketty’s improbable best-seller, “Capital in the Twenty-First Century,” has put that question in sharp relief. As just about everyone now knows, Piketty contends that over the next century, inequality is likely to grow. In response, he outlines a series of policies designed to reduce wealth at the very top of society, including a progressive income tax and a global wealth tax..." Link verified June 19, 2014