James Edgar Davis was an American police officer who served as the chief of the Los Angeles Police Department (LAPD) from 1926 to 1929, and from 1933 to 1939. During his first term as LAPD chief, Davis emphasized firearms training. Under Davis, the LAPD developed its lasting reputation as an organization that relied on brute force to enforce public order. It also became publicly entangled in corruption. Members of the LAPD were revealed to have undertaken a campaign of brutal harassment, including the bombings of political reformers who had incurred the wrath of the department and the civic administration.

The Los Angeles Police Department (LAPD), officially known as the City of Los Angeles Police Department, is the primary law enforcement agency of Los Angeles, California, United States. With 8,832 officers and 3,000 civilian staff, it is the third-largest municipal police department in the United States, after the New York City Police Department and the Chicago Police Department.