I generally agree, but I imagine there are many (including me) that doubt that the burden of slavery and segregation against particular groups ended in 1964.
It may be that more of the population is being more fully exploited now than before, but there is still a wide and growing disparity between various ethnicities in the U.S., still in echo of slavery.
From time to time we have had enlightened leaders who plow public money into common goods — like FDR’s New Deal and Eisenhower’s Interstate Highway system.
They are rewarded by a general increase in financial well-being and growth of the economy.
They are also rewarded by political disdain and reversals from those for whom exploitation of others is the source of their wealth.