After all the 1% controversy, it's reasonable to accept that 20% of taxpayers pay 80% of total taxes. Flat-Taxers make the argument that a single "flat" tax rate would be a better solution. These people obvious don't possess even simple math skills because then they would know that for every 1% taxes go down for the wealthy, they go up 4% for the poor. So for a rich person's 35% tax rate to go down to 30%, a poor person's 10% tax rate would have to go up to 30%!
Flat-Taxers are actually saying that poor people don't pay enough taxes.