You're confusing things. There is a difference between forced hard labor as just (and thus commensurate) punishment for a crime and actual, particular abuses committed by the justice system. There is nothing wrong with forced hard labor as a punishment for a crime to the degree required by justice (and frankly, many crimes deserve far worse). There IS something wrong with inflicting pain on someone who is innocent, esp. when those inflicting the pain do so without authority, without sufficient justification or in excess.