Eighteen years ago Yoko Ono sent me this postcard, an image of John Lennon's bloodstained glasses on the windowsill of their Dakota apartment, looking out onto Central Park. The caption indicated that 676, 000 people had been killed by guns in the United States since the death of her husband, John Lennon.
Today, she once again uses the anniversary of his death to highlight gun violence and to call for stricter gun control measures.
Lennon was shot dead in front of their apartment forty years ago today, at the age of forty. The number of deaths from gunfire has more than doubled in the last 18 years, to 1,436,000.
