Chomsky v. Foucault

So I guess this really is the debate at the heart of my recent questions about ethics.

Chomsky: We can imagine a better world, a more just world, a world based in a universal human code of ethics, and we should work toward the actualization of that world.

Foucault: What is unjust in the world is performed through us, even the most benign of our institutions reenact structures of power, all claims to a universal code of human ethics are necessarily corrupted by this inescapable performance of injustice, and any action toward the actualization of a better world is freighted with this performance of injustice. (That is what he's saying, right?)

But I think they are both right. We're doomed to failure, but we are obligated to try anyway.