"The reality is that the income tax is one of a number of types of taxes that individuals pay, both over the course of their lifetimes and in a given year, and it makes little sense to treat it as though it were the only tax that matters. Some 82 percent of working households pay more in payroll taxes than in federal income taxes.[15] In fact, low- and moderate-income people pay a much larger share of their incomes in federal payroll taxes than high-income people do: taxpayers in the bottom 20 percent of the income scale paid an average of 8.8 percent of their incomes in payroll taxes in 2007, compared to 1.6 percent of income for those in the top 1 percent of the income distribution (see Figure 2).[16]"
Some might find this link interesting, especially those who are duped into the idea that no federal income taxes equates they don't pay taxes.
Misconceptions and Realities About Who Pays Taxes — Center on Budget and Policy Priorities