Video: The story of John and Yoko

Editor's Note: Today is the 30th anniversary of John Lennon's death. Recently Anderson Cooper sat down with John Lennon's widow, Yoko Ono, to talk about their love affair, John's death, the Beatles, and much more. Watch the three part series below.

Part 1: The meet-cute

Part 2: The night John died

Part 3: John & Yoko's love affair

CNN Wire Staff

John Lennon would have turned 70 years old this month, and were the late Beatle alive today, he might be sitting in a rocking chair in Cornwall, England, with wife Yoko Ono waiting for a postcard from their son, Sean, Ono said in an exclusive interview with CNN's Anderson Cooper.

But eventually his spirit for activism would have roused him out of his retirement rocker, Ono added.

"I'm sure that, if he got to be 70, then he would have forgotten all of that: No, we have to do something now. And I'm sure this is when he would have been totally activist," Ono said. The wide-ranging three-part interview continues with the second installment on Cooper's "AC360" Wednesday night.

In the interview, Ono spoke about being unfairly blamed for the breakup of the Beatles and how she can't forgive Mark David Chapman, the maniacal fan who fatally shot Lennon in 1980.

She also strolled with Cooper through Central Park's Strawberry Fields, dedicated to Lennon and named after the song "Strawberry Fields Forever," written by Lennon and fellow Beatle Paul McCartney.

Lovers of Lennon's music should celebrate his 70th birthday anniversary, which occurred October 9, by remembering his expansive spirit, Ono said.

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