The famed Swedish sculptor Carl Frederik Reutersward (who died in May this year) has made one of the most powerful symbols of 'Non-Violence'. It's a large replica in bronze of a .45 calibre revolver with a twisted barrel, (also known as the knotted gun) to symbolize peace and non-violence. In 1988, it was gifted by the Government of Luxembourg to the United Nations and it stands today at the UN Headquarters in New York.