Americans kept all of their earnings until the civil war, not 1913
They started taxing everyone and moved towards giving different skin colors equal rights and called it "abolishing slavery"
Nothing to do with today's genocide in Gaza
Discussion
The income tax was imposed in two separate instances specifically to fund a war. That mutated into the need for constant war to continue the "justification", putting Gaza in the crosshairs.
Well the real connection is overpopulation made all lives worthless to the rulers, not just those of different skin color, and the more the population outsizes the available resources, the more the rulers panic and get increasingly psychopathic and bloodthirsty