Sheep and cattle ranchers in Colorado were locked in a chronic feud.

Evidence

Sheep are now raised in the State to the extent of half a million, and a chronic feud prevails between the “sheep men” and the “cattle men.” — Isabella L. Bird, A Lady’s Life in the Rocky Mountains, 167

Categorization

• FICTION: The sheep-men versus cattle-men feud is pure narrative fuel — a range war waiting for a protagonist caught between two camps.
• SEED: Angle: the range wars as a class-and-ecology conflict, not just a Western-movie trope.