[Jack Hydrazine]

So what you are saying is that it is impossible for a police officer to use only his arms to cut off the blood flow to a perp’s brain?

[DoughtyOne]

I said precisely what I meant to say. The hold used here was not the type that was banned.

[chris37]

The first picture shows the rear naked choke, a windpipe choke. Notice the position of the arm behind the head pushing the neck forward into the other arm thus constricting the windpipe. This is not what the cop did.

The second pic shows an anaconda choke, which constricts both arteries to the brain, but does not constrict the windpipe. One of the victim's own arms is used to press one side of his neck, while the forearm of the aggressor is used to press the other side.

In order to achieve the leverage needed to do this, the aggressor must first secure the hold, then rotate his body perpendicular to the victims body. Without that rotation, the hold does not work.

So the officer did not choke him in this manner either.