George Soros, heiresses to the Pritzker fortune, Abigail Disney and Facebook Inc. co-founder Chris Hughes are among those calling for a wealth tax to help address income inequality and provide funding for climate change and public health initiatives.

“We are writing to call on all candidates for President, whether they are Republicans or Democrats, to support a moderate wealth tax on the fortunes of the richest one-tenth of the richest 1% of Americans — on us,” according to a letter signed by 19 individuals — one anonymously — and posted online Monday. “The next dollar of new tax revenue should come from the most financially fortunate, not from middle-income and lower-income Americans.”

One of the youngest signers, 35-year-old Liesel Pritzker Simmons, whose extended family is worth more than $33 billion, framed the situation simply: “We are part of the problem, so tax us.”

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