As Robert F. Kennedy made a bid for the presidency 50 years ago, he was fatally shot by Sirhan Sirhan following a packed campaign event in Los Angeles.
The 24-year-old Palestinian brought an end to Kennedy's promising life and career, leaving Ethel Kennedy a widow and 11 children without a father.
More than two decades later, in 1989, Inside Edition's then-host David Frost was the first to interview the gunman from prison.
In the interview, narrated by Bill O’Reilly, Sirhan talks about how RFK was his hero and why he committed the crime.
"I sincerely regret my actions," he told Frost. "I was young, I was immature, I was wild ... I wish that I could reverse all my actions concerning Robert Kennedy."
For the full, exclusive interview, watch the video above.
Sirhan, now 74, remains behind bars in California. His next parole hearing is in 2021.