Its about 800AD, in what will later become Sacred Ridge, which is just south of Durango Colorado. There is some kind of dispute between 2 or more cultures and 1 culture is wiped out.
Men, women, children,,,,,, everyone is rounded up, tortured, and killed. There is evidence that suggest that hands were removed from the bodies as trophies, and the huts the people lived in were burned after the slaughter. This is not the act of a single person, or a small group of people, this was the actions of a whole community.
Fiction you say? Read this article on Discovery.com about how Genocide Wiped Out Native American Population.
What could have made one group of people turn on another group? Was there a disease that was blamed one something like witchcraft? Did 1 group of people think the other 1 had put a curse on them, or maybe poisoned them?
Lets fast forward to the Black Death of 1348 – 1350, in which killed millions of Europeans. As the usual scapegoat, Jews were rounded up, blamed for outbreaks of the plague, and were put to death. Some Jews met with grizzly, unspeakable deaths, such as being burned to death.