That's a common trope now in the political discourse. Since mere opinion journalism got almost completely consumed by partisan hackery, in the search for credibility and reader's trust a new crop of opinion writing has emerged - the "fact checking". Some time ago, you would write "my political opponents claim A, but my opinion is B, and here are the arguments supporting it". Now, you write: "Myth: A. Fact: B. Resolution: my political opponents are liars-liars-pants-on-fire".