Carl Fredrik Reuterswärd’s sculpture “Non-Violence” and the image of a knotted gun, a non-functional weapon, symbolizes peace. Reuterswärd designed the sculpture upon Yoko Ono’s request after his friend John Lennon was assassinated in 1980. The original sculpture was installed in Strawberry Fields, Central Park. This bronze version was given to the United Nations by the government of Luxembourg in 1988; over thirty copies of “Non-Violence” are placed throughout the world. The imagery of the knotted gun is also used as the logo for The Non-Violence Project Foundation, which focuses on ways to replace violence with peace.