On December 18, 2009, JMP released the results of a groundbreaking survey titled Justiciabarómetro: Zona Metropolitana de Guadalajara. The survey represents the largest independent study of a police force ever published in Mexico. Focusing on the Zona Metropolitana de Guadalajara (ZMG), one of the largest metropolitan areas in the country (second only to Mexico City), this study surveyed nearly 80% of the 6,873 municipal police officers. Due to its magnitude, breadth of inquiry, and high level of participation, this study makes a noteworthy contribution to the study of public security issues in Mexico.