Moral analysis is possible, moral judgment and action are not. If everyone is morally right then no one can take action based on his or her own beliefs without compromising the respect that should be accorded to others. This stance turns morality into a matter of opinion and eliminates the need and motive for action because it effectively eliminates conflict. Nothing is demanded of the relativist. In fact, we are obligated NOT to interfere.
Moral relativism is a comfortable moral position because it requires nothing of the moral agent.
As Americans, we fool ourselves if we think that being tolerant means that we have no common values. We do think that certain moral positions are better than others. Our best moral selves strive to respect human rights and to guarantee social justice. These are features of the democratic landscape. They are moral as well as political features.