Ilyse Hogue: If people value the set of equal freedoms we have that make upward mobility possible, it doesn't matter what the probability is that they themselves will get there. She says in dictatorships that are unequal, they are actually more likely to become democracies than those dictatorships that were equal. "We'll have to find ways of taxing people effectively if we want to squeeze it any further," she says.
Why has the American political system failed to arrest accelerating inequality, and is there anything we can do about it?
• Ben Ansell is professor of comparative democratic institutions at Oxford and author of “Why Politics Fail”
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