Complex sentence: Shortly thereafter, Kumalo learns that his son has been arrested for the murder during a burglary of Arthur Jarvis (who was an engineer), a white activist for racial justice and son of Kumalo's neighbour James Jarvis.
Split into simpler sentences: Shortly thereafter, Kumalo learns that his son has been arrested for murder. Arthur was an engineer, a white activist for racial justice and happens to be the son of Kumalo's neighbour James Jarvis.