I always knew it was the Village People.
In their study, Kent Flannery and Joyce Marcus examined the past 10,000 years of Mexico's Oaxaca (wah-HA-ka) Valley. Until Native American village life began there, even with corn's domestication around 5,400 years ago, no evidence of warfare emerges from the region. But researchers find signs of dwellings burned in raids from 3,500 years ago, when settled life began.
Now all is left is to find a way to blame it on white people.