>>3828186>>3828187I took a course in Pre-Columbian American History (as in both continents before they were tamed, not as "in rascal-riding retard with a machine gun tucked in the folds of his flab" 'Murrican). Various cultures, from the Olmec and Pre-Ceramic South American Valdivia and Casma cultures, all show various forms of human sacrifice. These became more and more elaborate as cultures were unified by conquering groups (Biru, Inca, Totlec, Aztec, etc.) Aztecs did not just sacrifice humans ritually. They did it outside of religious contexts recreationally.
As far as the CIA goes, there is a tangential connection here to the development of South and Central America in the late 20th and earliest 21st century. At this time, long-neglected histories and the most recent archaeological discoveries and theories began making it into the history and social science curricula in Mexico, and places like Bolivia, Columbia, Ecuador and Guatemala. El Salvador and Nicaragua introduced the Maya and Olmec, highlighting their reliance of human sacrifice, bloodletting and ritual warfare.
The CIA? Well, many of the archaeological digs and their findings, as well as their inclusion in the curricula of various locales (from Chicano Studies and 'Brown Studies' in the US to folklore and Pre-Columbian studies in the Latin American area) were aimed at 1. Creating a sense of primitivity and revulsion toward these in US Latino populations; 2. Creating a similar negative sense among elites and in the populations of US-friendly regimes in the Americas; and, finally, 3. Creating a pretext of Castilian and Mestizo oppression of natives in non-US-friendly and leftist regimes, as well as in regions of otherwise friendly regimes where operations required enough instability to go unnoticed. The CIA funded many related education and aid projects through the Peace Corps
In the wild, however, this all led to Aztlan mythology mingling with corruption culture. Hence, Sinrostro Severedhands .