Talk about fairness when your flat tax proposal exempts the first $40,000 of income, and taxes capital gains at the same rate as earned income.
Talk about fairness when your sales tax includes purchases of stocks and bonds.
Talk about fairness when your sales tax isn't a VAT tax, which effectively doubles its rate on manufactured items.
For gosh sake, all you "populists" and union members and Move-On people, and Occupiers: Start talking about the math -- it's a no-brainer.
Anyone who supports a flat tax is either rich, wants to give away his money, or doesn't understand it.