Build a movie plot around this: What is the Surname of everyone in town? Johnson
In the American Old West of 1874, construction on a new railroad led by Lyle (Burton Gilliam) runs into quicksand. The route has to be changed, which will require it to go through Rock Ridge, a frontier town where everyone has the last name of "Johnson" (including a "Howard Johnson", a "Dr. Samuel Johnson", a "Van Johnson" and an "Olson N. Johnson"). The conniving State Attorney General Hedley Lamarr (Harvey Korman) wants to buy the land along the new railroad route cheaply by driving out the townspeople. He sends a gang of thugs, led by his flunky assistant Taggart (Slim Pickens), to scare them away, prompting the townsfolk to demand that Governor William J. Le Petomane (Mel Brooks) appoint a new sheriff. The Attorney General persuades the dim-witted Le Petomane to select Bart (Cleavon Little), a black railroad worker who was about to be hanged. (Bart had hit Taggart in the head with a shovel after Taggart ignored him and his black friend sinking in quicksand, deciding to save their handcar instead.) Lamarr believes a black lawman will so offend the townspeople that they will either abandon Rock Ridge or lynch the new sheriff, with either result paving the way for him to take over the town.With his quick wits and the assistance of drunken gunslinger Jim (Gene Wilder), also known as "The Waco Kid" ("I must have killed more men than Cecil B. DeMille"), Bart works to overcome the townsfolk's hostile reception. He defeats and befriends Mongo (Alex Karras), an immensely strong, slow-thinking (but surprisingly philosophical) henchman sent by Taggart and Lyle to kill Bart, and then beats German seductress-for-hire Lili von Shtupp (Madeline Kahn) at her own game. Lamarr is furious that his plans keep failing and decides to destroy Rock Ridge with a newly recruited and diverse army of thugs (which Lamarr characterized as ideally consisting of "rustlers, cutthroats, murderers, bounty hunters, desperadoes, mugs, pugs, thugs, nitwits, half-wits, dimwits, vipers, snipers, con men, Indian agents, Mexican bandits, muggers,...