This tag should be used when a picture contains the circular symbol: ☮ which is commonly known as the "Peace Symbol" but specifically as the CND logo (Campaign for Nuclear Disarmament), being actually made up of the semaphore symbols for N and D.
Originally designed for the British nuclear disarmament movement by Gerald Holtom in 1958, it took on a more generic association with peace in general after being made into badges that were sold in the millions on American campuses.
Use v for the hand sign formed with the index and middle finger.
