King of the Pecos is a 1936 American Western film directed by Joseph Kane and starring John Wayne and Muriel Evans.

Ten years later, John is about to take his bar exam but he remembers what happened to his parents.

Stiles has been gouging the ranchers for the cost of water and paying them a pittance for their cattle.

The judge rules that Stiles has only claim to one of the many water rights and that the rest are in public domain.

Stiles tells his men to wear white arm bands so they won’t be shot.

John is aware of Stiles’ plan and has the ranchers wear the same arm bands.