 This is a powerful argument, but there seem to be at least two problems. The first is that the harm principle would actually allow religious and political speech for the same reasons that it allows most pornography and hate speech, namely that it is not possible to demonstrate that such speech does cause direct harm to rights. I doubt that Mill would support using his arguments about harm to ban political and religious speech. The second problem for Kateb is that if he is right that such speech does cause harm by violating rights, we now have powerful reasons for limiting political and religious speech. If Kateb's argument is sound he has shown that harm is more extensive than we might have thought; he has not demonstrated that the harm principle is invalid.