[SmartInsight]

The article has a link to a related article, also very interesting:

Ancient “Human Sacrifices” Found in Peru, Expert Says

http://news.nationalgeographic.com/news/2008/06/080604-human-sacrifice.html

Three possible human sacrifice victims have been found at a 4,000-year-old archaeological site in Peru, an archaeologist says.

The apparently mutilated, partial skeletons (see photos) could overturn the peaceful reputation of the Pre-Ceramic period (3000 B.C. to 1800 B.C.) in the Andes mountains - a time generally seen as free of ritualized killing and warfare.

[Little Bill]

the peaceful reputation of the Pre-Ceramic period (3000 B.C. to 1800 B.C.) in the Andes mountains

It beats the hell out of me how any THINKING person can ever conclude that mankind has ever been peaceful.