Sixteenth Amendment

"The Congress shall have power to lay and collect taxes on incomes, from whatever source derived, without apportionment among the several States, and without regard to any census or enumeration."

The sixteenth amendment allows the federal government to collect an income tax from all Americans.

This is a comedy illustration where we can see a banker shaking a man to take his money and collect his taxes. A lot of people say that "the government steals money from us by collecting taxes". 

This video explains how the taxing system works, relating it to beer. I thought it was a funny and interesting way to explain it.