 This approach to privacy is not one accepted by all legal moralists. The usual two-part structure of legal moralism—the wrongs and the countervailing factors—was noted above. Devlin and Moore treat privacy as a potentially defeating countervailing factor, an aspect of the second part of that structure as we have just seen. Duff, however, treats it as a criterion to determine what counts as a wrong before even reaching the question of countervailing factors, in other words as an aspect of the first part of that structure. For Duff, the criminal law is, or should be, limited to the definition and declaration of public wrongs; wrongness, for him, “is a reason for criminalization—but only if it is committed within the public realm” (Duff 2018: 100). In insisting on this, Duff is departing from Devlin’s claim: