This incident is the perfect scenario in which the LVNR (lateral vascular neck restraint) is required. These officers fight with this subject for at least 3 minutes using all of the tools at their disposal with no compliance.
At one point the man grabs an officer, and only then are defensive strikes applied. When the third officer arrives (also a supervisor) he recognizes quickly that the only way this man will comply is through unconsciousness. As you see once the restraint is applied within 3-5 seconds the subject is rendered unconscious, instantly compliant, and receives no other measures for compliance. He is placed in restraints, and the video ends.
Use of the LVNR is a valuable tool for law enforcement, and should be properly taught on how to apply. The technique is not a “choke” which is the blocking of air.
The technique stops blood flow. When the brain stops receiving blood it temporarily shuts down. It’s the same principle of when you stand up too fast, and get lightheaded. It’s has no lasting harmful effects when applied properly. I encourage you to consult the policies of your department before using the LVNR, and to learn (and train) the technique.