Are Americans Innocent Victims?

Libertarian Party members tend to believe that once upon a time, Americans were living in libertarian bliss, but then some evil statists seized power and imposed Big Government. This occurred against the will of Americans; hence they are not to blame for this. Consequently, Americans deserve a huge tax cut, especially an income tax cut. But is this belief true? If Big Government exists because Americans support this idea and vote for it, then do they really deserve a tax cut? If a person murders someone, do they deserve to be punished or rewarded? If Americans vote to decrease the size of government, then, and only then, do they deserve a tax cut.