A Thief Catcher

A Thief Catcher is a onereel 1914 American comedy film, produced by Mack Sennett for his Keystone film company, directed by Ford Sterling, and starring Sterling, Mack Swain, Edgar Kennedy, and Charles Chaplin as a policeman. Chaplin had claimed in interviews that he had played a bitrole as a policeman while at Keystone Studios.

Source: Wikipedia