Here is an interesting discussion – of the sort likely to send parts of the redistributionist left over the edge – pointing out that in certain respects, the poorest in the US have become better off and that by some yardsticks, inequality has also shrunk. For what it is worth, inequality per se is not an issue that I regard as one raising any injustice whatsoever so long as the economic pie expands. If the economy was a fixed pie, then there might be some presumption that a large slice for Mr X came at the expense, possibly, of Mr Y. It is, however, worth noting, I think, that support for the free market order tends to be more robust when there is a large, entrepreneurial middle class into which anyone, given sufficient hard work and a pinch of luck, can enter and where the chance to escape poverty is high.
All in all, the stats I refer to in the link are encouraging news, and worth spreading around.