Why does not the FAR Left and Democrats own up to their failures , why the deflection of blame onto others ?

We can list an entire Cacophony of Liberal Failures , from a list such as the FED Reserve , New Deal , The Great Societies supposed WAR on Poverty ,Vietnam , US dept of ED and Energy , etc ---------------All we hear from the left is that we the people are the failures that we did did not contribute enough or support their agenda enough ,if we do not we are called a Racist a Bigot a Hillbilly a "non progressive ", still we give and still we hear the leftist cry of think of the children etc .