The Census Bureau released data on income inequality recently and Mother Jones put together some charts showing the results of the research (linking one here but more good ones in the article). It’s very clear how this is continuing to shrink the middle class and, if not for the social safety nets we have had in place since the 1960s and before, the poverty rate would be tremendously higher.
The Atlantic also added a chart to this data that should be noted and I’ll include here.