It was a crime that shook the world nearly 40 years ago. John Lennon was gunned down in front of his New York City apartment building by a deranged fan, Mark David Chapman. Chapman has been behind bars since the crime, but will soon face a parole board. Lawmakers and fans gathered at Lennon's Strawberry Fields memorial in Central Park. They were protesting Chapman's possible release. InsideEdition.com's Mara Montalbano (https://twitter.com/MaraMontalbano) has more.