I'm not trying to claim any one group is authoritative. I'm saying that I'm not aware of any group, regardless of their level of authority, who uses an interpretation that includes the worst material. Everyone (that I'm aware of) makes an exception for at least one form of material, even the ACLU or similar organizations. Even the Libertarian party, one of the groups most in favor of limiting government, is not against censorship of the worst sort of material.