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David Demurjian

Police Use of Force

For the past 30 years, David Demurjian has been a prosecutor in New York, Massachusetts and California, where he has handled a wide array of felony cases (crimes against police officers). For most of his career, he has been a use of force expert for various law enforcement and military agencies (state and federal) throughout the country. His area of expertise is in use of force by law enforcement and military personnel. He has taught defensive tactics and use of force throughout the world. He is a graduate of New York University and Fordham University School of Law and is a member of California, New York and Massachusetts State Bars.

David is also a sworn member of a large law enforcement agency where he oversees defensive tactics training and use of force instruction. He continues to serve as a captain assigned to the Judge Advocate General’s Office. For the past 40 years, he has trained in judo, Aiki-jujutsu and Kyokushinkai karate. He holds a black belt rank in all of these disciplines.

He is general counsel for California Narcotics Officers’ Association and the California Force Instructors’ Association. Reach him at

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