American math professor Boris Weisfeiler killed at Colonia Dignidad. His story in The Plan http://www.amazon.com/Plan-Civil-Rights-Mystery-Sleuth-ebook/dp/B00I50NCEI/ref=sr_1_1?ie=UTF8&qid=1423347310&sr=8-1&keywords=the+Plan+Klopfer
For a few days in October 1973, a self-styled military "delegation" toured provincial cities in northern and southern Chile, killing dozens of political opponents of General Augusto Pinochet's September coup. Many of the victims of what became known as the "Caravan of Death" had voluntarily turned themselves into the military authorities. Prisoners were taken from their cells and summarily executed, often without the knowledge or consent of the local military authorities.