Lord Devlin: a society needs to be able to defend itself against intrusion/defilement.
Justifies making things illegal even if they cause no harm to others
His rival: John Stuart Mill who said only harm to others should matter
More contemporarily, Leon Cass: disgust is a legitimate emotion which can sometimes guide us legitimately warn us of atrocity.
E.g. “torture” elicits disgust that rightly directs us away from it