Violence Dynamics Vancouver 2017

What is Violence Dynamics?

Simply put, Violence Dynamics is the study of violence and the people who inflict violence on others.Understanding how violence happens, how your body deals with violence, and how to choose and deploy an appropriate level of force in response is crucial if you want to survive a violent encounter. Real violence happens faster and harder than most people’s training takes into account.

The Violence Dynamics seminar (VioDy) takes principles and concepts that usually take professional users of force years to comprehend and distills them into a common language for dealing with violence.

Created in Minnesota in 2010 by Kasey Keckeisen, Rory Miller, and Marc MacYoung, VioDy has become an annual event, with spin-off seminars in Edmonton, AB, Oakland, CA, and Ashburn, VA. We are bringing VioDy to Vancouver for the first time in 2017.

The Weekend

VioDy Vancouver will be held over three action-packed days: Friday, Dec 1st to Sunday, Dec 3rd. We'll be smack in the middle of downtown Vancouver, at the Rhodes Wellness College on the corner of Howe St. & Helmcken St. It's an easy walk from both SkyTrain lines, and close to some of the best lunch spots in the city. Courses will run from 9:00am to 6:00pm.

You can attend all three days, two days, one day, or any individual course. There will also be some great extra activities, including  a skills competition that will run over the whole weekend, a people watching expedition up Granville Street, a panel discussion, scenario training, and a super-condensed, free self defense presentation from the Valkyries for the wider community.

The Courses

Violence Dynamics 

Context of violence

Conflict Communication

Force Law

Counter Ambush

Power Generation


Logic of Violence

Threat Assessment


Strength vs. Structure

Logic of Takedowns

Ground Control

High End Use of Force

Escape & Evasion

Pre-Attack Cues

Police Judo

Knife Defense

The Dojo vs. The Street

Soft Physical De-Escalation

Post-Violence First Aid

... and more!


Early Bird registration opens June 1st, 2017! Register before August 1st for the early bird discount.

Get Updates to Your Inbox!

Worried you're going to miss a registration deadline or an important announcement? Join the VioDy Vancouver mailing list below and we'll keep you up to date on all the goings-on leading up to the event.


Are you interested in sponsoring VioDy Vancouver? We have a wide variety of sponsorship packages available to fit your needs. Email for more information.


I've never done martial arts, but I'm interested in self defense. Should I still come?

Yes! VioDy has something for everyone, at all skill levels. You will learn a ton, and have a lot of fun.

I'm not a law enforcement officer or use of force professional. Can I come?

Yes! You do not need to be a professional to enjoy the benefits of the seminar.

I'm an 8th degree black belt/pro MMA fighter. Should I bother?

Yes! First of all, self defense and violence dynamics are very different than traditional (or non-traditional) martial arts. Second, you wouldn't have gotten that good without realizing that there's always something new to learn about a subject you thought you knew well. Third, VioDy covers a lot of non-physical skills too. Fourth, there will be some advanced classes, as well as opportunities for private training with the instructors. Fifth, seriously, these are some of the best teachers on the continent, all together for the very first time. Why would you not?

Can I sponsor an attendee?

Heck, yes! This is still a Valkyrie event, after all - people helping each other is the cat's pyjamas and we will always facilitate it. Send us an email if you would like to provide any level of personal sponsorship, or to inquire if there are any sponsored spots available.

Who is Violence Dynamics?

We want to make VioDy Vancouver special, so we have brought together 10 world-class instructors from across North America.

The Travelling Circus

Rory MillerRory Miller

Rory Miller is the author of a number of books, including Facing Violence, ConCom and Violence: A Writer’s Guide. A seventeen-year veteran of the Multnomah County Sheriff’s Office Corrections Division, he has served as a deputy, sergeant, tactical team member and leader, mental health specialist, trainer, and investigator. In 2008, Miller went to Iraq as an advisor to the Iraqi Corrections Service. Since 2011, he has been a full-time writer and teacher.

Kasey KeckeisenKasey Keckeisen

Kasey Keckeisen is an experienced Police Officer, SWAT team leader, and SWAT training coordinator. He is the United States Midwest Regional Director for the Edo Machi-Kata Taiho Jutsu organization, and the Minnesota State Director for One-On-One Control Tactics. Keckeisen holds 6th degree black belts in Judo, Jujitsu, and Aikido and a black belt in Taiho Jutsu. He is also a catch wrestling and bareknuckle boxing enthusiast, and a terrific dancer. Keckeisen, along with Marc MacYoung and Rory Miller is a founding member of Violence Dynamics. Keckeisen runs Judo Minnesota.

Tammy Yard-McCrackenDr. Tammy Yard-McCracken

Tammy Yard-McCracken is the owner of Kore Krav Maga and a globally certified expert level Krav Maga instructor. She is the third woman ever to earn an expert rank with Krav Maga Global (KMG) in North America. Yard-McCracken is head of KMG's international women's division & is adjunct training staff at a Washington DC area tactical training range.  When she is not training she has 25 years in as a professional counselor specializing in trauma management, neuroplasticity and mind/body medicine.

Randy KingRandy King

Randy King is a former club and personal security specialist, with many years in charge of security for bars, events and private clients. He is the co-owner and founder of KPC self defense and has been teaching full time for 10 years. He is a Filipino martial arts and Krav Maga “expert” who specializes in civilian self defense and edged weapon defense. King is the star of Randy’s Rant on YouTube and the co-host of the Talking to Savages podcast.

The Locals

Toby HintonSgt. Toby Hinton

Toby Hinton is a sergeant with the Vancouver Police Department. He is an instructor with in the VPD’s Force Options Training Unit, and helped develop Vancouver's Police Judo. He is a founding member of the Odd Squad Productions Society, and starred in The Beat and Through a Blue Lens.

John IrvingCst. John Irving

In his 25 years of service as a police officer and over a decade as a Use of Force Instructor, John Irving has developed and run tactical training programs for agencies across the country, and has been an integral part of training local law enforcement officers through the Justice Institute of BC and Vancouver’s Tactical Training Centre.

Scott DineenScott Dineen

Scott Dineen, owner and head instructor of Primary Care First Aid is a full time professional fire fighter and first responder instructor. Within the fire department, Dineen is also a confined space and high angle rope rescue instructor for its technical rescue team. As a Red Cross instructor, he has a background in teaching first aid to the general public and training new Red Cross first aid instructors.

The Valkyries

David R. Packer, Head Instructor, holding a longswordDavid R. Packer

David Packer is the head instructor and co-founder of Valkyrie Western Martial Arts Assembly. He has been practising both eastern and western martial arts since 1980. He also has a wealth of experience in security, self-defense, and tactical training. He has worked as a bouncer and security contractor, and has designed and delivering self-defense and intervention training to a range of audiences - from emergency responders to single teen mothers - since 1998.

Courtney RiceCourtney Rice

Courtney Rice is the current president and co-founder of Valkyrie Western Martial Arts Assembly. She has trained in Western Martial Arts for over a decade, and has a well-deserved reputation as a fearsome wrestler with a killer guillotine, and a skilled swordswoman with both the rapier and longsword. She currently works as a roleplayer at Vancouver’s Tactical Training Centre.

Kaja SadowskiKaja Sadowski

Kaja Sadowski is the current vice president and co-owner of Valkyrie WMAA. She trains primarily with the rapier, as well as boxing, wrestling, stick fighting, and knife fighting. Since 2015, she has been an active participant in realistic scenario and tactical training for first responders at the Vancouver Tactical Training Centre, and has been a guest instructor for the Vancouver Police Department’s 2016/2017 Community Safety Officer class.

Comments are closed