Title says most of it. I believe it may have involved Native Americans (as villains, probably!). Someone of the group is killed and cries out in either pain/anguish. Hero stresses to the others that you must not do that and later he (I think it was the hero) is killed (stabbed and thrown off a cliff, iirc) and falls silently to his death.
Saw it as a kid or teen, so mid-late 70s or before.
Thanks,
Sir Rhosis