"If you look only within rich nations, yes inequality has increased, because the poor and blue collar middle class have lost a lot of jobs to poorer countries.

"If you look only within rich nations, yes inequality has increased, because the poor and blue collar middle class have lost a lot of jobs to poorer countries. But that phenomenon is actually reducing inequality as measured from a global view." Exactly, this phenomenon is called the "Elephant Curve": https://www.brookings.edu/research/whats-happening-to-the-world-income-distribution-the-elephant-chart-revisited/ https://www.brookings.edu/research/whats-happening-to-the-wo...