"The symbol almost at once crossed the Atlantic. [..] Simpler to draw than the Picasso peace dove, it became known, first in the US and then round the world as the peace symbol."

How interesting - I did not know that it had become adopted as a universal 'peace' symbol internationally!

When I was growing up CND (among middle-Englanders) was considered quite a radical and militant organisation. And my guess is that the overwhelming majority of members at that time were pretty left-wing.

Clearly that was here and then. The symbol means something more general and apolitical now, throughout the rest of the world at any rate.