One of the most significant impacts on income inequality over the last 50 years has been the dramatic change in single mother households. From 1960 to 2011, the number of single mother households has shot from 7.3 percent to 25.3 percent of all households. So even though incomes do not necessarily change, it does change significantly the amount of actual income inequality among individuals. This is the data collectivists use to leverage their statist agenda.
For example, if a married couple splits through divorce, their “household” income decreases even though their actual salaries remain the same. This is because it is a ratio of the total income of the household, and, in this example given the households now have a significantly lower income even though the two individuals’ incomes did not change. Even if each of these individuals’ income increased significantly, the income per household remains at a decreased level