Link. The item is structured with headings for major points of argument, and with a multitude of links interested readers can follow. It would be a surprise if the issue of income inequality, the fact and the politics behind it, does not gain attention in leading up to the Democratic Party's choice of a nominee, and after that leading up to the November 2020 election. The argument for tax code reform shall be integral to any actual plan candidates may advance. Already some proposals such as wealth tax for the living and a boosted estate tax for transfers of wealth/power from one generation to the next. Leveling things being the general theme behind any specific policy suggestions advanced so far, e.g., by Warren or by AOC.
UPDATE: The homepage of truthdig offers interesting reading:
https://www.truthdig.com/