Is there really much middle class left in this country to speak of? [1] There is a bit but it's rapidly declining.
[1] http://blogs.reuters.com/david-rohde/files/2012/01/middle_cl...
[1] http://blogs.reuters.com/david-rohde/files/2012/01/middle_cl...
In particular, the following is more informative and doesn't rely on a zoomed-in axis to emphasize the change over time: https://www.pewsocialtrends.org/wp-content/uploads/sites/3/2...
It's also adjusted for household size:
> In this report, “middle-income” households are defined as those with an income that is 67% to 200% (two-thirds to double) of the overall median household income, after incomes have been adjusted for household size.