This letter is yet unpublished. On publication, we will show the date and organization which published it. From our perspective Robert H. Knight's hatred of relativism is appropriate and deserved. Allowed to continue, it will destroy our nation.
Cultural relativism is indeed evil.
However, one must also consider what it wishes to replace, which is only slightly better from our Western cultural viewpoint. Let's try to distill this problem to crux, and see where we arrive. On careful examination, one observes three major Western cultural models of reality. Current philosophy says truth is absolute and value is relative. Cultural relativism says both truth and value are relative.