In a McKinsey publication income inequality is analyzed.
You can read about the Gini Coefficient and find data in the CIA Factbook or in other sources. The most obvious questions are:
a. Is the income inequality in the US?
b. Is the wealth well distributed in the US?
c. How do you compare the US with other countries?
d. Is it true that we are poorer than former generations?
give answer in 130 words provide references