membership of other professions in both the public and private sectors. High union membership rates among police and other law enforcement officers significantly raise the average. The police labor movement is divided into two camps -- the independent police labor organizations and the police labor organizations affiliated with organized labor through the AFL-CIO or CtW. Approximately 80-85 percent of all police labor organizations would be classified as independent and have no affiliation with organized labor. There are no accurate reports on how many of the 800,000 sworn officers are members of a police union. The best estimate would be 75-80 percent; that would rank police officers with firefighters as having the highest unionization rates in the United States. The New York City Police Department is the largest in the country. With roughly 35,000 sworn officers, it's three times larger than the next-biggest, Chicago. It supports five separate unions, according to various ranks (patrol officers, sergeants, lieutenants, detectives, and captains): Police Benevolent Association of the City of New York, which describes itself as the "largest municipal police union in the world" representing 24,000 members "who hold the rank of Police Officer". Its head since 1999 is Patrick Lynch. Detectives' Endowment Association, which claims representation of 5,500 active and 12,000 retired New York City Police Detectives. Sergeants Benevolent Association Lieutenants Benevolent Association Captains' Endowment Association, representing the ranks of Captain, Deputy Inspector, Inspector, Deputy Chief, and Surgeon The other four cities in the U.S. with over 5,000 police officers correspond with the four next-largest independent municipal labor unions by total membership: Chicago Lodge #7 of the Fraternal Order of Police Los Angeles Police Protective League Philadelphia Lodge #5 of the FOP Houston Police Officers' Union Police associations and organized labor Of the 20 to 25% of police unions with affiliations with organized labor, the largest is the International Union of Police Associations, which chartered with the AFL–CIO in 1979. It has over 15,000 members. Other union affiliates include the International Brotherhood of Police Officers, which is part of National Association of Government Employees (SEIU/CtW). Amid calls to remove police from the labor movement in 2020, member affiliates of the west coast King County Labor Council brought two motions to reform and / or expel the Seattle Police Officer Guild, the largest police union in the northwest. On June 8, 2020 the Writers Guild of America, East called on the AFL-CIO to dismiss