Plastic Ono Band - Give Peace A Chance (1969): 2:01 - 3:14

In Montreal, Canada, John Lennon sings "Hare Krishna, Hare Krishna, Hare Hare Krishna"! Then some Hare Krishna devotees are shown, chanting the Hare Krishna mantra while dancing in ecstacy! Yoko Ono and Timothy Leary are also in the clip.

From: https://www.youtube.com/watch?v=ftE8vr0WNus (148,000+ views - Sep 21, 2016)

Plastic Ono Band - Give Peace A Chance (1969) (Video Title),2016 (Video Upload Year)

Thanks to Keshiha Prabhu.