Revivals
Mack Sennett continued to use the Keystone Cops intermittently through the 1920s. By the time sound movies arrived, the Keystone Cops' popularity had waned. In 1935, director Ralph Staub staged a revival of the Sennett gang for his Warner Brothers short subject Keystone Hotel, featuring a re-creation of the Kops clutching at their hats, leaping in the air in surprise, running energetically in any direction, and taking extreme pratfalls. This footage has been used countless times in later productions purporting to use silent-era material.
The Staub version of the Keystone Cops became a template for later re-creations. 20th Century Fox's 1939 feature Hollywood Cavalcade had Buster Keaton in a Keystone chase scene. However, during his own silent film career, the nearest Keaton had appeared in a "police comedy" was The Goat (1921) and Cops (1922). Abbott and Costello Meet the Keystone Kops (1955) included a lengthy chase scene, showcasing a group of stuntmen dressed as Sennett's squad. (Two original Keystone Cops in this movie were Heinie Conklin as an elderly studio Guard; and Hank Mann as a prop man. Sennett also starred in a cameo role-as himself.) Mel Brooks directed a Keystone Cops-type car chase in his comedy film Silent Movie.
By the 1950s surviving silent movie comedians could be pressed into service as Keystone Cops regardless of whether they appeared with the troupe authentically. In the This Is Your Life TV tribute to Mack Sennett several Sennett alumni ran on stage dressed as Keystone Cops.
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