oppression leading to confession This word...imports something which tends to sap and has sapped that free will which must exist before a confession is voluntary ... [including] such things as the length of time intervening between periods of questioning, whether the accused person had been given proper refreshment or not...: Oppression includes torture, inhuman or degrading treatment, and the use or threat of violence (whether or not amounting to torture) : The word should be given its ordinary dictionary meaning.