Relativism, simply put.
“Cultural relativism is first and last an interpretive anthropological—that is to say, methodological— procedure. It is not the moral argument that any culture or custom is as good as any other, if not better. Relativism is the simple prescription that, in order to be intelligible, other people’s practices and ideals must be placed in their own historical context, understood as positional values in the field of their own cultural relationships rather than appreciated by categorical and moral judgments of our making. Relativity is the provisional suspension of one’s own judgments in order to situate the practices at issue in the historical and cultural order that made them possible. It is in no other way a matter of advocacy.“
-Marshall Sahlins, 2002. (Waiting for Foucault, Still. Chicago: Prickly Paradigm Press. Pg46)
[...] of moral relativism. By this I mean the doctrine that, starting from the (entirely reasonable) premise that one cannot fully understand any action except in the context of the actor’s cultu…, concludes that as a consequence, no one has the right to stand in judgment over any action [...]