Part I. Introduction to the new police accountability -- A national police crisis -- The accomplishments and limits of traditional police reforms -- Part II. The elements of the new police accountability -- The "heart of the matter" : controlling police officer use of force -- Controlling critical incidents -- Public complaints and police accountability -- Early intervention systems -- External review of the police -- Part III. Contemporary issues in accountability -- Increasing accountability with risk management -- Police accountability and technology -- Part IV. The future of police accountability