The word, subject, carried the latter meaning until Kant. In a curious reversal of meaning and usage, the word now is used to refer to 'objective' reality. See Noumena, Objectivity. The process of turning a subject into an object. Any process which tends to reduce intentionality and self-determination.
People are objectified when they are treated as a means to an end.
Power objectifies by forcing people to do things they judge to be inappropriate. A stance of impartiality and disinterest in the search for truth. This stance assumes, erroneously, that there is a truth about society and nature which exists apart from the subjective activity of intending human beings. See Phenomenology, Postmodern. Any deed or word that degrades or corrupts that which is held to be sacred in a society.