Answer:
With the development and expansion of welfare programs like Social Security, Medicare and Medicaid, the second half of the 20th century saw a tax system that only became more complex and nuanced. An increasing reliance on revenues from wealth and consumption taxes, in the U.S. and most other developed nations, also triggered growing resistance to the practice. Organized resistance and legal protest against the income tax coalesced in the U.S. in the 1950s and continues today
