The Late Great Planet Earth (1979): 56:55 - 57:30

Although Tal Brooke is talking about Maharishi Mahesh Yogi and his followers, the scene actually shows the Hare Krishna devotees. (The Maharishi speaks for a few seconds at the end of the clip.)

http://www.imdb.com/title/tt0079445/

Maharishi Mahesh Yogi (Religious Leader),Tal Brooke (Writer),Documentary (Film Genre),Drama (Film Genre)