Provide us with links/citations (yes, people who don't make their most of their $$$ from their salary, but instead from their investments pay a lower rate on the gains and I don't care.  One can argue that the $$$ was already taxed beforehand).  Maybe I'll search for Mr. Blythe later. I suggest taxfoundation.org, which uses IRS data. 

In the spirit of not providing links and regarding economic inequality, I'll note that economic mobility is higher in countries with lower interference in the voluntary exchanges of good and services between individuals (otherwise known as capitalism) than it is in countries with higher interference (more statist).  Also, such interference is objectively immoral and has no place in a free society.