A picture of John Lennon is surrounded by flowers at Strawberry Fields, the site that pays tribute to Lennon, in Central Park, New York, Monday, Dec. 7, 2015.  Tuesday is the anniversary of Lennon's death; he was killed 35 years ago in New York. (AP Photo/Seth Wenig)

PHOTOS: Remembering John Lennon

Music icon John Lennon was shot and killed Dec. 8, 1980 outside of his New York City apartment. His death is considered a defining moment fo…