Here's a different approach you might want to consider. Inequality is inevitable. It WILL necessarily exist. This would answer your question principally, not just factually. You cannot stop inequality without socialist regulations. read more
For example, if the question is, "Is Income Inequality Worldwide Increasing," then the answer is clearly no. Worldwide Income Inequality is much lower now than it has ever been. This is clearly seen in the economic development of China and other countries during the last 40 years. read more
From the draft paper, Income Inequality in the United States: Using Tax Data to Measure Long-term Trends. “Further, accounting for government transfers reduces the increase over 80 percent. read more
Other studies have not found consumption inequality less dramatic than household income inequality, and the CBO's study found consumption data not "adequately" capturing "consumption by high-income households" as it does their income, though it did agree that household consumption numbers show more equal distribution than household income. read more