https://en.wikipedia.org/wiki/Redistribution_of_income_and_wealth
http://origin-www.bloombergview.com/articles/2015-11-25/leaving-the-justice-out-of-wealth-redistribution
http://www.theatlantic.com/business/archive/2015/09/americans-reject-wealth-redistribution/404806/
http://www.businessdictionary.com/definition/redistribution-of-wealth.html
http://www.debate.org/redistribution/
http://www.investopedia.com/terms/p/progressivetax.asp
http://www.nytimes.com/roomfordebate/2015/02/04/can-tax-policy-distinguish-the-rich-from-the-middle-class/we-need-a-truly-progressive-tax-rate
https://toughnickel.com/personal-finance/Flat-Tax-vs-Progressive-Tax-Pros-and-Cons-for-the-US
http://www.debate.org/opinions/progressive-tax-vs-flat-tax-does-progressive-taxation-help-the-poor
http://study.com/academy/lesson/understanding-the-progressive-tax-code.html
