That’s a major reason John Paul II refused to investigate Father Marcel Maciel, the wicked founder of the Legionaries of Christ — because the Legionaries were conservative, and apparently a great success, and that was all that mattered. It’s why many conservative Catholics unwisely defended John Paul II-appointed prelates like Boston’s Bernard Law in the early 2000s. It’s why a notorious traditionalist priest, Father Carlos Urrutigoity, could find a welcome from conservative bishops in Pennsylvania and then Paraguay, despite a trail of abuse allegations.

Now it’s why certain organs and apostles of liberal Catholicism are running interference for McCarrick’s protectors — because Francis is their pope, the liberalizer they yearned for all through the John Paul and Benedict years, and all’s fair in the Catholic civil war.

But the inevitable, even providential irony is that this sort of team thinking never leads to theological victory, but only to exposure, shame, disaster. Indeed, the lesson of these bitter decades is that any faction hoping to lead Roman Catholicism out of crisis should begin with purges within its own ranks, with intolerance for any hint of corruption.