This year is the 30th anniversary of John Lennon's murder. Yoko Ono has put copies of her and John Lennon's 1969 holiday posters -- 'War is over! If you want it. Happy Christmas from John and Yoko' -- in over 100 languages on her website for free download. Ono asks on her website that fans "Download, print & display these posters in your window, school, workplace, car and elsewhere over the holiday season. Send them as postcards to your friends. We say it in so many ways, but we are one."
Here's some history of the poster, according to Spinner:
The original poster -- which reads "War Is Over! If You Want It. Happy Christmas From John and Yoko" -- was created in 1969 and placed on billboards in 11 cities around the globe. The words were later used by Lennon in his 1971 song 'Happy Xmas (War Is Over).'