What a find! RightPerspective tracked down some awesome videos:
To put the late John Lennon in the right perspective on the anniversary of his death, here he is being outed as a fake, phony, and fraud on The David Frost Show!
John and his wife Yoko Ono debut the song Attica State on Dec. 16, 1971, with newly-written sheet music in front of him. After the performance, a shout is heard from the balcony and Frost brings down a couple to the front of the stage to confront him over their song.
The couple (typical middle-class, White, Archie-Bunker types that dominated NYC then) rip into Lennon for praising the prisoners.