Save the Children
Starring Roberta Flack, Sammy Davis Jr., Isaac Hayes, Marvin Gaye, Cannonball Adderley, Jerry Butler, Dennis Edwards, Melvin Franklin, Cuba Gooding, Damon Harris
It's a music and documentary movie, and has a rating of 7.6 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Belgium.