I wonder if anyone can provide an example where collective guilt was meaningful or productive in any way.
Around six hundred years after Augustine, Europe had William the Conquerer and the Holy Roman Empire, I guess? Five hundred years after that, Europe had the Renaissance based in a reclamation of the heritage of the ancient world.
I don't think original sin did a very good job of achieving the integration of anyone.
The whole thing was meant to be tongue in cheek. :)