Yoko Ono and Sean Lennon believe John Lennon would have supported gay marriage.

In an interview with cabler HLN, Ono, the widow of John Lennon, said she could not believe that marriage equality was even an issue.

“I can't believe it,” Ono said. “And if John was here he would have been very angry.”

“I do think he would have been surprised,” added Sean Lennon, John Lennon's son. “Just from seeing what his vision – he was very optimistic about, you know, people awakening.”

Singer-songwriter John Lennon, a founding member of the Beatles, was murdered in 1980. He and wife Ono often combined advocacy with performance, protesting the Vietnam War with iconic songs such as Give Peace a Chance and Imagine.

Ono and Sean Lennon recently joined Beatles members Paul McCartney and Ringo Starr to create the group Artists Against Fracking to oppose hydraulic fracking.