In this Thursday April 2, 2015 photo, a knotted gun sculpture painted by British musician and ex-Beatle Sir Paul McCartney is displayed at a park in the city of Monterrey, Mexico. Thirteen knotted gun sculptures painted by various artists are on display in this city that for years has been plagued with violence generated by warring drug cartels. The original knotted gun sculpture was designed and created by Carl Fredrik Reutersward as a memorial to John Lennon after he was shot and killed in 1980 and is now displayed outside of the United Nations headquarters in New York City.
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