Government land commissioner is killed by henchman of the area Indian agent, but why?

BUFFALO BILL JR. is an American western television series with Dick Jones (1927-2014) in the title role of a young fictional marshal in West Texas. The series aired in syndication from March 1, 1955, until September 21, 1956.

The series is set in southwestern Texas near the Rio Grande River, the boundary with Mexico. Jones plays Buffalo Bill, Jr., with Nancy Gilbert as his younger sister, Calamity, who at the age of twelve is training to be a telegraph operator at the station at nearby Wiley Junction. The two were orphaned years earlier in the Black Hills of South Dakota following a massacre of their wagon train. The children were rescued and adopted by Judge Ben "Fair and Square" Wiley, played by Harry V. Cheshire, whom they often called "Uncle Ben". Director Don McDougall
Starring Dickie Jones, Nancy Gilbert, Harry Cheshire, Bob Woodward

Directed by George Archainbaud

Starring
Dickie Jones as Buffalo Bill Jr.
Nancy Gilbert as Calamity
Harry Cheshire as Judge Ben 'Fair and Square' Wiley
Bob Woodward as Stage Driver
Dennis Moore as Duncan
Harry Lauter as Butch Cassidy
Walter Reed as Tom Bishop