The so-called peace symbol is actually an emblem for the Campaign for Nuclear Disarmament, designed in 1958 by an English chap named Gerald Holtom. And guess what? I don't like it.
In the first place, it's harsh and angular. Supposedly there is an N superimposed on a D -- but who cares? It looks like surrender: a bird with its wings down rather than up. It looks like a Do Not symbol. It looks like fly eyes oddly bisected. It looks like death.
Peace deserves a better symbol than this. Let's invent one.