Dear Editor, Moral relativism, my ass! Mr. Vance McDonald [“Postmarks Online,” March 6] is no more an arbiter of truth than is Mr. Black or anyone else. Nothing we humans do should be about right or left; it should all be about right or wrong, and that is something most people can identify by the age of 6 years. Anything that harms others is wrong. The so-called right and left are both wrong most of the time – wrong for our country and wrong for humanity.