Paul Buchheit has written a nice summary on income inequality. I will do a summary of his summary and provide a link to his article.

Overall wealth in the world has doubled in the last ten years but is being hoarded by paying unfair wages and unfair tax rates.

93% of all income in the US now goes to the richest 1% of the population.

Among large nations, only Russia, Ukraine and Lebanon have a more unequal distribution of wealth.

Consumer debt has actually disguised how bad things are. The middle class has kept up appearances by taking out loans.