Truth to a Liberal, is like a crucifix to a vampire.
Not too far from the truth. The leftwing intelligentsia believe that truth is "socially constructed," which means that the truth is whatever we say it is. Hence, everything is political, because there is no pre-political reality. Clinton's adolescent reply, "It depends on what the meaning of 'is' is," is a distant ripple of this attitude towards truth. (Clinton's too dumb to understand where it comes from.)