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There are policies that liberals repeatedly push and maintain even though history repeatedly proves them wrong. No place is this more evident than in tax policy.

 Despite historical evidence to the contrary liberals always insist that tax increases will increase revenue. This is because their idealized view fails to recognize the fact that tax rates affect economic activity and that at some point tax revenues reach a peak. This is a case where their idealized view disagrees with reality, but yet they keep trying to make the idealized view work.