Wow. Much of this I knew but one thing that shocked me is that the 10th percentile of wealth in this country is a family with NEGATIVE $2000. If you were dropped into Nebraska from a meteor with nothing in your pocket you wouldn't even be in the bottom tenth.<p>A sad state of affairs for the "greatest country in the world".
The second chart is all you need to look at. It can't be healthy for a society if only the top few percent see any income gains and for the rest incomes stagnate.
Side note, in graph 5 the middle one is the "Non-Hispanic African American" category ...<p>... and have a look at the "data" underneath, a three line set of data with two values coming from Melissa (link to another "local" .xlsx) and a third one which is just a number.<p>Most probably correct calculations, but no real way to check.
Probably the best bet here is to create mechanisms such that wealthy people who possess an abundance of caring and money can donate that money to the less fortunate, which would have the side effect of levelling the field, and the bonus of not impinging on anyone's liberties.