"Western Civilization" is the Amerikkkan form of what "Israel" does by claiming a 3000 year ancestry to the land of Palestine, or what Nazi Germany did by framing itself as the "Third Reich." In all three cases, you have a relatively new national formation, bereft of a common history or a rich cultural canon of its own, but desperate for the imprimatur of historical immortality.

It is all tacky Disney Land bullshit. It has to be, because the claim in all of these cases is to be the Main Character of the totality of human history. It is the pinnacle of hubris.