It’s very hard to argue with the logic that ever police officer should know brazilian jiu jitsu. This is how a black belt named Viking Wong found himself surrounded by law enforcement officers.

“With great power comes great responsibility, that’s the obvious thing to tell the students,” said Wong to scmp.com, who earned his black belt during an 11-year stay in England.

“The main thing here is to control instead of inflict hurt on the other person, because it’s a choice.”

He came to be involved with Chinese police due to connections with a high ranking police official in one of his gyms in Hangzhou.

He was invited to host a 5 day intensive camp named Mission: Control.

“It was pretty neat,” said the 30-year-old, who also won the 88 kilogram weight class at the ADCC Asian Open in Kazakhstan last weekend.

“They’re learning it from the get go instead of when they’re already in the society working. It’s a good start.

“There were officials from other provinces also interested and looking at the classes. We’re hoping to get this really basic system and spread it out to the whole of China.

“That’s the end goal, get everyone a basic level of understanding, every police force from top to bottom.”

Police brutality is still a big issue.

“What I teach them is about protecting yourself, protecting your citizens and trying to get civil servants to provide a better service.

“This sport has done many great things for a whole range of different people. It will definitely do good for law enforcement officers.

“They’re people too. And if they’re insecure of their abilities that’s when uncontrolled scenarios happen, and that’s not good for anyone.

“We do live training every day. Once they know how to grapple and get used to the adrenaline, you’re not as anxious and nervous when it comes to an altercation, you’re much more controlled.”