The Laughing Policeman (1973): 45:55 - 46:25

Immediately after San Francisco police Sergeant Jake Martin (Walter Matthau) leaves a strip joint that he is investigating, he is surrounded by a Hare Krishna chanting party. Then he is approached by a Hare Krishna devotee who tries to get him to accept some literature.

http://www.imdb.com/title/tt0070292/