WTFF??? Why are they continuing to torture that guy? What kind of psychos are continuing the incredibly painful wrist lock when the guy is handcuffed??? All while using a calm soothing tone.
Who relaxes when they are being tortured?? Answer: Nobody. The cops know this. These cops are performing for the body cameras that they know are recording their voices. As long as their voices remain calm, they feel they can continue to hurt this man?
The initial wrist lock where they are trying to get his hands behind Mario's back is meant for sheer pain and body control. Not for actually getting his hand behind his back. You don't put the wrist up by the shoulder blade with the elbow locked in front of the man. The office could have used several other techniques to force the shoulder into position. What he was doing was intentionally causing severe pain. Not trying to put the hands into handcuff position. Then when the handcuffs are on, he is still wrenching on the wrist which causes extreme pain.
Again, the officer knows this. They were inflicting intentional harm on this man.