Those who think that The Donald will reduce income inequality in America are sadly mistaken, as indicated by the linked reference and the associated article:
Thomas Piketty, Emmanuel Saez & Gabriel Zucman (2016), "Distributional National Accounts: Methods and Estimates for the United States"
http://gabriel-zucman.eu/files/PSZ2016.pdfAbstract: "This paper combines tax, survey, and national accounts data to estimate the distribution of national income in the United States since 1913. Our distributional national accounts capture 100% of national income, allowing us to compute growth rates for each quantile of the income distribution consistent with macroeconomic growth. We estimate the distribution of both pre-tax and post-tax income, making it possible to provide a comprehensive view of how government redistribution affects inequality. Average pre-tax national income per adult has increased 60% since 1980, but we find that it has stagnated for the bottom 50% of the distribution at about $16,000 a year. The pre-tax income of the middle class| adults between the median and the 90th percentile has grown 40% since 1980, faster than what tax and survey data suggest, due in particular to the rise of tax-exempt fringe benefits. Income has boomed at the top: in 1980, top 1% adults earned on average 27 times more than bottom 50% adults, while they earn 81 times more today. The upsurge of top incomes was first a labor income phenomenon but has mostly been a capital income phenomenon since 2000. The government has offset only a small fraction of the increase in inequality. The reduction of the gender gap in earnings has mitigated the increase in inequality among adults. The share of women, however, falls steeply as one moves up the labor income distribution, and is only 11% in the top 0.1% today."
The linked article is entitled: "Income inequality helped elect Donald Trump — and would grow wider under his policies".
https://mic.com/articles/161422/income-inequality-helped-elect-donald-trump-and-would-grow-wider-under-his-policies#.tHRJ1dJvnExtract: " Some of the world's top researchers on income inequality — who presented a new paper on the topic Tuesday — say American economic anxiety and the growing gap between the rich and poor helped put President-elect Donald Trump on a path to the White House. Those same economists now warn that Trump will likely make the problem worse.
…
Letting this trend continue unchecked could hinder growth in the U.S. economy, co-author Zucman said in an email to Mic.
"No one knows how far this can continue to go," Zucman wrote. "But above a certain point, extreme inequality is bound to destroy growth and lead to political instability."
Paradoxically, Saez said, Trump's proposed policies — like regressive tax reform — are likely to make income inequality worse.
"The scary thing is that, unlike Reagan in 1980," Saez said, pointing to the year that income inequality began to grow sharply, "we are starting in 2016 from an already record-high level of inequality."
Trump's tax plan, several economists argue, disproportionately benefits people who are already wealthy.
…
The underlying causes of growing inequality are complex, the researchers found. One big problem, Saez said, is that the government's biggest redistribution efforts — Medicare and Social Security — target the elderly, as opposed to the very poor.
Saez also pointed to the "Reagan revolution" of the 1980s, saying that "de-regulation, erosion of minimum wage, unions weakening and less progressive taxation," all made income inequality worse.
But a particularly worrisome factor driving the rise of inequality is the dominant role of capital appreciation, Saez said: The growth in the value of assets — as opposed to growth in salaries or productivity — has accounted for most of the rise in richer Americans' income since the early 2000s."
See also:
http://www.salon.com/2016/12/09/the-next-generation-of-americans-is-going-to-be-in-a-lot-of-trouble/Extract: "“Children’s prospects of achieving the ‘American Dream’ of earning more than their parents have fallen from 90 percent to 50 percent over the past half century,” said Stanford economist Raj Chetty, co-author of the Equal Opportunity Project study. “This decline has occurred throughout the parental income distribution, for children from both low and high income families.”"
