http://news.bbc.co.uk/1/hi/magazine/7292252.stmIt started life as the emblem of the British anti-nuclear movement but it has become an international sign for peace, and arguably the most widely used protest symbol in the world. It has also been adapted, attacked and commercialised.
It had its first public outing 50 years ago on a chilly Good Friday as thousands of British anti-nuclear campaigners set off from London's Trafalgar Square on a 50-mile march to the weapons factory at Aldermaston.
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The South African government, for one, tried to ban its use by opponents of apartheid In 1973.
And, in 2006, a couple in suburban Denver found themselves embroiled in a dispute over their use of a giant peace sign as a Christmas wreath. The homeowners' association threatened them with a daily fine if they didn't remove it.
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The symbol that helped define a generation of baby boomers may not as widely used today as in the past. It is in danger of becoming to many people a retro fashion item, although the Iraq war has seen it re-emerge with something like its original purpose.