Peace on Earth, Goodwill Towards All
Billboards calling for peace line a large office building on 42nd Street and 5th Avenue in Manhattan.
The campaign originally started in 1969 with posters in 12 cities, New York, Los Angeles, Toronto, Rome, Athens, Amsterdam, Berlin, Paris, London, Tokyo, Hong Kong and Helsinki.
Today, you can download the message in over 100 languages, spreading the message of peace though out the world.
One of my favorites is the American Handsign version below: