Poor people pay state taxes at twice the rate of rich people
Because states tend to abuse consumption taxes, which fall overwhelmingly on the poor.

When state, local, property, and sales taxes are taken into account, the poorest 20 percent of Americans pay an average effective tax rate of 11.1 percent, the report found. The middle 20 percent pays a 9.4 percent rate, while the rate for the top 1 percent is just 5.6 percent. The lack of progressive income taxes and an over-reliance on consumption taxes are the primary culprit, the report says.