Arguably, George Orwell proves to be an effective police officer in "Shooting an Elephant." We see this through Orwell's actions after he receives a phone call from a local sub-inspector informing him that an elephant is "ravaging the bazaar." The sub-inspector asks Orwell to "come and do something about it," though he does not give specific instructions. During its rampage, however, the elephant kills a man, prompting a large crowd to gather around Orwell. As a result, it quickly becomes clear to him that shooting the elephant is the only acceptable course of action.
While Orwell is hated by the people he polices, generally dislikes his work, and is opposed to British imperialism, he carries out his duties and shoots the elephant. That he did not want to shoot the elephant is irrelevant: he did what had to be done and this makes him an efficient officer, even if he felt remorse at ending the animal's life.