It's from an album (LP) made during a folk festival, probably in the 70's - her is as much as I recall:

O, there's grieving in the plum groves, there's sobbing in the sand
There's sorrow in the shanty and there's anger in the land
There's been another lynching, and another grain of sand
Swells the mountain of resentment, O there's anger in the land
A woman broods in silence, close beside her open door
Flung down on her flimsy doorstep lies a corpse upon the floor
You'll not ask me why I'm silent, the woman said to me
Her two eyes blazed with anger and her throat throbbed agony
Once my heart could cry in sorrow, now it lies there on the floor
(something something something something), they can't hurt him any more
(now I may be missing a verse here)
Repeat first 2 verses

This one always got to me, I can't sing it through. The singer is a black woman, no idea at all who, or where the folk festival was, I think West Virginia or something.