State Articles of Universal Declaration of Human Rights.
Article 4 - 'No one shall be held in slavery or servitude; slavery and slave trade shall be abolished in all their forms.' - Slavery no longer exists in the true sense of the word. There may be relationships similar to a master/slave relationship on the surface, but they are different and come under the ambit of different treaties.
Article 5 - 'No one shall be subjected to torture or to cruel, inhuman or degrading treatment or punishment.' - Whenever action is taken against a person, they cannot be treated in an inhuman or degrading way. Punishment ought not to be administered in such a perverse manner that it is degrading to human dignity. An example of a violation of this article is the pictures released of the Guantanamo Bay prisoners who were shown to be treated in a very degrading manner.