Introduction; 1. A history of law enforcement; 2. Policing and social and economic policy; 3. Core principles governing use of force for law enforcement; 4. Use of firearms; 5. Use of 'less-lethal' weapons; 6. Facilitating peaceful protest and ensuring crowd safety during assemblies; 7. Use of force in custodial settings; 8. Use of force in counterterrorism; 9. Private security and use of force; 10. Counterpiracy at sea; 11. Accountability; Index.