rel·a·tiv·ism (rĕl'ə-tĭ-vĭz'əm)
n. Philosophy.
A theory, especially in ethics or aesthetics, that conceptions of truth and moral values are not absolute but are relative to the persons or groups holding them.
Absolutizing what is not absolute but relative is called totalitarianism. It does not liberate man, but takes away his dignity and enslaves him. It is not ideologies that save the world, but only a return to the living God, our Creator, the guarantor of our freedom, the guarantor of what is really good and true. - Benedict XVI at WYD 2005
class.