CND is a British group. The letters stand for Campaign for Nuclear Disarmament. Their aim is easy to say and hard to do: they want the British government to give up nuclear bombs, close the military bases that keep them, and stop making more. The group grew in the late 1950s, when many people in Britain were afraid of a nuclear war, and it became famous for long protest walks and for a simple badge: a circle with three lines inside. That mark later travelled the world as the “peace” sign, though actually a lot of people who draw it have never heard of CND itself. CND is not the government, not the army, and not a news channel. It is a pressure group: members try to change the government’s mind. In Britain the name can feel a bit old, a bit left-wing, a bit earnest — the kind of thing an older person might still wear on a jacket. People say the letters, not the full name.