After World War II, most western countries believed they needed to tax the wealthy to pay for government programs, reduce income inequality, and promote social welfare. They valued income and weatlh equality. The top tax rate in the US for the extremely wealthy exceeded 90% in 1950s and 1960s. America was considered economically great for the everyday American (not including the black Americans, of course). Today conservatives saying they want to make America "great" again conveniently forget unions were strong and the wealthy were paying their fair share of taxes then.
Note: there is no "greatness" in Project 2025.
