In
this article by the Pew Research Center, which Wikipedia describes as a "nonpartisan think tank", Rakesh Kochhar, a senior researcher, writes that "the disposable (after-tax) incomes of middle-class households... in 10 Western European countries in the study trailed well behind the American middle class." The only exception is Luxembourg, which the author describes as "a virtual city-state where the median income was $71,799" in 2010. The income was $60,844 in America in the same year. The author acknowledges that the middle class in America "may be smaller", though. I lived in Europe half my live and I visited Germany last summer. I can anecdotally confirm the numbers based on my middle-class relatives and friends who reside in Cologne and Stuttgart. I would concede the argument that the reason they make less money is because they pay more in income taxes for social and educational services such as universal healthcare and free college, but I believe that Americans have more freedom to spend their money however they wish because of less taxation. You can view tax rates for most European countries
here. As you can see, the tax rate is almost as high as 60% in some countries. I am not sure that you can convince the majority of Americans of any race to pay such amount in taxes.
You have the same rights as any white person in America. You mentioned the Constitution, in which the 14th amendment grants any American citizen equal protection of the laws. The Civil Rights Act of 1964 prohibits discrimination based on race, color, sex, religion, or national origin.