By your tone, I can see why you are Lonesome in Massachusetts. Just sayin.
The first Beta Boy was obviously acting out. The second was a bit more normal.
That said the wrist grip is uncomfortable but not worthy of the title “Pain Grip”.
The police were obviously not intending to inflict pain. They were also filming the arrest, something they would not do if they were deliberately inflicting pain. It’s all drama. Being physically picked up and moved may not be comfortable, and injury may result, but that was clearly not the Polizei’s intention, or the result.