Not only has this song never been posted at Mudcat before, but there is precious little information about it on the whole freakin' Internet. I am amazed. This is too good a song to be unknown.

It's on the album "Freedom Is Coming: Songs of Protest and Praise from South Africa," by Fjedur, a Swedish choral group whose director apparently collected the song in Africa. There is a 30-second sound sample at last.fm. I also found a complete mp3 file: click to play..

(I found that mp3 with AltaVista Audio Search.)

There is also a songbook with the same title as the album.

It seems to have been recorded mainly by non-commercial groups such as:
The Solidarity Choir of Sydney, Australia.
The Lesbian & Gay Chorus of Washington DC
The Minnesota Boychoir
etc.

A few organizations have adapted it: "We shall not give up on peace...We'll put an end to bigotry..."