(A year later) I called an avant-garde film-maker, Ricky Leacock. He thought it was a dumb idea but suggested Albert and David Maysles. I phoned them in New York on a Wednesday, and
Friday the band arrived. I asked them to start filming when the plane landed, and I met them there.
Kennedy had been killed just two months before. The children of America were in trauma. That had a huge amount to do with what happened with the Beatles there. It was phenomenal, other-worldly.
Albert Maysles (film-maker) : You could really film people's events and experiences without imposing yourself with lights and tripods and unwieldy equipment. We were paying attention to people's lives as they were lived. We stuck to our principle of not trying to change anyone's behaviour.
(Source : https://groups.google.com/forum/#!topic/rec.music.beatles/9uHq6p-9geI)