[icebraining]

I don't see why. A person's morality, even if completely subjective, is still one frame of reference under which actions, thoughts, etc can be judged. Therefore, it's perfectly possible to judge the approval of female genital mutilation as wrong - just as long as I realize that the judgment is subjective.

Or to put it in another way, meta-ethical moral relativism doesn't require normative relativism.

[jackson1372]

While we can distinguish between first-order moral relativism and metaethical relativism, it's widely accepted that the former implies the latter.

So it's not uncontroversial to say that you can be an objectivist moral relativist. In any case, this discussion has been about metaethical relativism.