Question: Who led the real-life Rebellion that the film 'North West Mounted Police' is based on?

Context paragraphs:
Selwyn Egerton Sangster: Selwyn Egerton Sangster, known as Canuck, was a Canadian outdoorsman and writer.  He lived 1883 to 1966.  He was a member of the Canadian North West Mounted Police, and for years attached to the Canadian Indian Service.  He founded a hunting and fishing outfitting organisation in the Height of Land region of North Canada.

Northwest Hounded Police: Northwest Hounded Police is a cartoon starring a prototypical Droopy and Tex Avery's wolf.  This cartoon (a remake of Droopy's first cartoon "Dumb-Hounded" and adopting elements from the Bugs Bunny cartoon "Tortoise Beats Hare") revolves around the wolf (an escaped convict) on the run from Droopy, who is trailing the wolf in order to capture him.  The title is a play on words on "North West Mounted Police", a 1940 film.

Foy Van Dolsen: Foy Van Dolsen (November 29, 1911 - March 5, 1990) was an American movie character actor.  He appeared in many movies, such as "Never Say Die", "Tom Sawyer, Detective", "Reaching for the Sun", and "North West Mounted Police".  He is best known for playing "Panama Pete, the Phantom" in the 1941 Universal horror film "Horror Island".  The Phantom was one of Universal's more impressive monster-villains, tall, with a mustache, wearing a hat and cape, with a most menacing voice.  Foy Van Dolsen and his wife Libby retired from show business and ran a Quaker boarding school in Northern California in the 1960s called The Farm.

British Columbia Provincial Police: The British Columbia Provincial Police (BCPP) was the policing body for the Canadian province of British Columbia until 1950.  These forces pre-dated Canadian confederation, preceding the North West Mounted Police by fifteen years and the Ontario Provincial Police by seventeen years.  The force is usually dated from the appointment of Chartres Brew in 1858 with the formation of the Colony of British Columbia and associated appointments.  While Chartres Brew often signed his correspondence as either Chief Constable of the colony and Chief Inspector of Police for the new mainland colony in 1858, he was never in fact given this position; he was technically the Chief Gold Commissioner and later a Stipendary Magistrate.  Douglas and the Colonial office had rejected forming a standing police force due to budgetary concerns; however, Douglas appointed Brew Gold Commissioner to strengthen the magisterial force of the new colony. “There was no way for Brew to realize the importance of his dual appointment.”  As Gold Commissioner, Brew was armed with magisterial powers.  Each magistrate was allowed to appoint six constables, constables were to act as clerks, recorders, collectors, and postmasters, and the result was they became integrated into the colonial administration.  "Since the constabulary remained the most consistent government presence in the most isolated regions, some constables continued to have several titles and responsibilities, including assessor and tax collector, registrar of births, deaths and marriages, returning officer, government agent and notary public.  They were also expected to collect license [sic] fees, make weather reports, gather vital statistics, check cattle brands, test new drivers; in other words, perform any task the provincial government asked of them.  In the process, Provincials became well-known members of the community, on a first-name basis with many residents."  Brew had served with Royal Irish Constabulary in County Cork, Ireland, before being sent to British Columbia to assist in stabilizing the situation there, beset as it was by well-armed Americans in the gold fields and the accompanying risk of annexation.

Northwest Rangers: Northwest Rangers is a 1942 Metro-Goldwyn-Mayer Northern second feature that is a remake of "Manhattan Melodrama" set in the North West Mounted Police of Canada.

North-West Rebellion: The North-West Rebellion (or the North-West Resistance, Saskatchewan Rebellion, Northwest Uprising, or Second Riel Rebellion) of 1885 was a brief and unsuccessful uprising by the Métis people under Louis Riel and an associated uprising by First Nations Cree and Assiniboine of the District of Saskatchewan against the government of Canada.  The Métis believed that Canada had failed to protect their rights, their land and their survival as a distinct people.  Riel had been invited to lead the movement but he turned it into a military action with a heavily religious tone, thereby alienating the Catholic clergy, the whites, most of the Indians and some of the Métis.  He had a force of a couple hundred Métis and a smaller number of other Aboriginal people at Batoche in May 1885, confronting 900 government troops.

North-West Mounted Police in the Canadian north: The history of the North-West Mounted Police in the Canadian north describes the activities of the North-West Mounted Police in the North-West Territories at the end of the 19th century and the start of the 20th.  The mounted police had been established to control the prairies along the Canadian-United States border in 1873, but were then also deployed to control the Yukon region during the Klondike Gold Rush, and subsequently expanded their operations into the Hudson Bay area and the far north.  The force was amalgamated in 1920 to form part of the new Royal Canadian Mounted Police, who continued their predecessors' work across the region.

Roland Anderson: Roland Anderson (November 18, 1903 – October 29, 1989) was an acclaimed movie art director, famous for receiving 15 Academy Award nominations but never winning an Oscar.  Anderson's first Oscar nomination was for his first film in 1933, "A Farewell to Arms".  A frequent collaborator with Cecil B. DeMille - he worked on "Cleopatra" (1934), "The Buccaneer" (1938) and "North West Mounted Police" (1940) - as well as such other classics as "Holiday Inn" (1942), "Road to Utopia" (1946), "Son of Paleface" (1952) and "Will Penny" (1967).

Ben Calf Robe: Ben Calf Robe was a Blackfoot (Siksika) elder, residential school survivor, and scout for the North West Mounted Police (and later the RCMP).

North West Mounted Police (film): North West Mounted Police is a 1940 American adventure film produced and directed by Cecil B. DeMille and starring Gary Cooper and Madeleine Carroll.  Written by Alan Le May, Jesse Lasky, Jr., and C. Gardner Sullivan, and based on the 1938 novel "The Royal Canadian Mounted Police" by R. C. Fetherstonhaugh, the film is about a Texas Ranger who joins forces with the North-West Mounted Police to put down a rebellion in the north-west prairies of Canada.  The supporting cast features Paulette Goddard, Preston Foster, Robert Preston, Akim Tamiroff, Lon Chaney, Jr. and George Bancroft.  Regis Toomey, Richard Denning and Robert Ryan make brief appearances in the film playing small roles. .

Supporting paragraphs: North West Mounted Police (film) North-West Rebellion
Answer: Louis Riel