You may free apartheid killers but you can't force their victims to forgive
This is an article about post-apartheid South Africa, written nearly twenty years after Disgrace was, that provides context for the social climate of the novel.
In Retrospect: “Disgrace,” Coetzee’s Masterpiece
https://www.bookcritics.org/2008/03/31/in-retrospect-disgrace-coetzees-masterpiece/
This lengthy 2008 review of Disgrace probes more deeply into many of the themes Coetzee explores in the novel.