Holy shit, you Americans and your fucking lawsuit mentality.
Maybe if she shot the kid and wounded him for life, but you are promoting "legal action" over a fall into a bush, resulting in a minor scrape, something that every skateboarder deals with pretty much every session anyways.
Yes the cop was over the line and deserves a scolding/reprimand whatever, but in reality the average schoolyard roughousing among friends involves more violent force than what happened there.
Your "freedom as an American" to try and sue anyone over the slightest little "booboo" is a world-wide joke.
It was a shitty situation that lasted a couple of minutes and caused nothing more than a minor scrape, those happen in life, get the fuck over it.