Biko - Peter Gabriel (1980)
My words will pale in comparison to the great music critic Tom Moon's. I will just add that I discovered this song on the Woodstock '94 soundtrack and it opened my eyes to the majesty of the past, present and future work of that weird guy from the Sledgehammer video. This is why I love Genesis. This is why I love the music of South Africa. This is why I love songs of freedom. This is why I love Peter Gabriel.
For those of you who have never seen Cry Freedom, whose scenes are used in this video, I encourage you to do so.
And Paul Simon's version ain't half bad either: