Loss of middle class jobs is not a bug; it's a feature.

From Mark Thoma:

. . . [A]nother way some might describe the patterns in the labor markets during recent recessions is that a variety of economic policy decisions by both Democratic and Republican administrations have had the impact of dismembering the industrial base of the US without encouraging the growth of sufficient replacement jobs, thereby throwing the American middle class under the train. That, however, is such a dark interpretation, as opposed to say, cheering the efforts of policymakers to lessen the burden of work on Americans by encouraging foreign nations to forsake their own consumption to provide goods for our citizens.