Complex sentence: The Fatima massacre refers to an incident in Fátima, Buenos Aires, Argentina, where 30 drugged and illegally detained prisoners were shot and whose bodies were then dynamited on August 20,1976.
Split into simpler sentences: The Fatima massacre refers to an incident in Fátima, Buenos Aires, Argentina, where 30 prisoners were illegally detained, drugged, and shot. Afterwards, their bodies were then dynamited on August 20,1976.