This is one of those charts that shows the power of great graphics. In this case, the information represented here clearly summarizes the jobs crisis in Los Angeles Country following the Great Recession.
The chart comes from the Edmund G. "Pat" Brown Institute of Public Affairs' (PBI) 2011 Los Angeles State of the City Report. The individual circles provide a sense of scale for that industry — federal, state, and local government is a lot bigger than social services — while the two axis plot job growth or decline against wages. The dotted line demarcates what the PBI considers a sustaining wage, in this case $44,000 a year.
These are scary circles. Private education and health care are the only sectors that are complete above the zero level. Pretty much the entire remainder of the economy is below the line. And as you can see, there's a whole high-income cluster on the far right, the $80-100,000 region.