OKLAHOMA CITY — The anxiety and seething anger that followed the disappearance of middle-income jobs in factory towns has helped reshape the American political map and topple longstanding policies on tariffs and immigration.

But globalization and automation aren’t the only forces responsible for the loss of those reliable paychecks. So is the steady erosion of the public sector.

For generations of Americans, working for a state or local government — as a teacher, firefighter, bus driver or nurse — provided a comfortable nook in the middle class. No less than automobile assembly lines and steel plants, the public sector ensured that even workers without a college education could afford a home, a minivan, movie nights and a family vacation.

In recent years, though, the ranks of state and local employees have languished even as the populations they serve have grown. They now account for the smallest share of the American civilian work force since 1967…

Read more in The New York Times.