Oh, there will be behavioral standards all right. But they will not be held to any scrutiny higher than what my group considers convenient versus what your group considers convenient. If a Hitler or a Stalin can convince enough people that their view of right is the correct one, then who is to say that it is wrong? You may have a different opinion, but why should your opinion be taken into account. There has to be some transcendent source of right and wrong. If not, then life is politics and coersion in the end is the highest virtue. That is a world I don't want to live in.
Fixed it for you.