Probably the most powerful and unique animation sequence I’ve ever seen. It had such a lasting effect on me that I cannot watch it, listen to it, or read the accompanying narration without getting emotional. Some films will actually influence your course in life. This is one of mine.
American animator John Hubley created the opening sequence and was the original director of the film. He died in 1977 and Martin Rosen took over. Hubley’s indelible work is, for some unaccountable reason, uncredited.
Thanks to Lemedy for the GIF(t)s.