Relativism is sometimes identified (usually by its critics) as the thesis that all points of view are equally valid. In ethics, this amounts to saying that all moralities are equally good; in epistemology it implies that all beliefs, or belief systems, are equally true.
Why is relativism right?
Ethical relativism is the theory that holds that morality is relative to the norms of one's culture. That is, whether an action is right or wrong depends on the moral norms of the society in which it is practiced. The same action may be morally right in one society but be morally wrong in another.
What is relativistic truth?
Relativism is the belief that there's no absolute truth, only the truths that a particular individual or culture happen to believe. If you believe in relativism, then you think different people can have different views about what's moral and immoral.