Today income inequality in the United States is greater than at any time since 1929 and increasing. It is also increasing internationally. 20% of income goes to 1% of the population and the cumulative wealth disparity is even greater. Income in excessive of need is used to acquire property, stock, jewelry, bonds, commodity futures, etc. While the acquisition of wealth deprives the poor it ultimately does the wealthy no good for St. James 5:2 says "Your wealth has rotted away, your clothes have become moth eaten."
While considering this, there is a article by Robert Reich on the growing income equality to read. Without asking you to endorse any particular solution, I am asking you to look at the problem squarely in both it's pratical and spiritual dimensions. http://www.sfgate.com/columns/reich/