So you are a cop, and your supervisor says, "Kids have been skateboarding on the sidewalk where little old ladies are shopping for hats and produce and the little punks are harrasing the old folks. Skateboarding there is a violation of city ordinance and I want you to go out there and keep those brats from making the mayor's mother call me again."
You say, "Yes Sir" and go out to stop the kids from rolling into people on the sidewalk.
The first kid you try to stop says something crude and gets away but you get his buddy, the unlucky second in line. He immediatly thinks, "If Dave got away, I can too!" and begins to fight.
You wrestle him to the ground as you are trained to do to those who resist arrest, and then the video camera comes up with a bunch of punk kids appearing to try to interfere with your sworn duty.
I wonder if the video was planned to be there to document Officer Bob's reaction to punk kids pushing his buttons...
Naw... that scenario never happens....