Cypress Hills massacre
1873 CE.
Shown on the map at 49.550°, -109.889°.
The Cypress Hills Massacre occurred on June 1, 1873, near Battle Creek in the Cypress Hills region of Canada's North-West Territories (now in Saskatchewan). It involved a group of American bison hunters, American wolf hunters or "wolfers", American and Canadian whisky traders, Métis cargo haulers or "freighters", and a camp of Assiniboine people. Thirteen or more Assiniboine warriors and one wolfer died in the conflict. The Cypress Hills Massacre prompted the Canadian government to accelerate the recruitment and deployment of the newly formed North-West Mounted Police.
Text from the Wikipedia article Cypress Hills Massacre, licensed CC BY-SA 4.0.