Police officers are not baby sitters. They are called to a scene like this to intervene, restore order and protect public safety.
In this incident police were called to a scene, and then more police were called to the scene, and then more police were called to the scene. This could easily have escalated and folks could have been seriously injured, not because of police but because of why the police were called, and then more called, and then more called for after that. I don't think most here have the foggiest idea what it is like to be essentially parachuted in to a scene where you're surrounded by folks that include some obnoxious self-centered individuals, reported violence, and with no idea who's packing a weapon. Oh, and their job is to restore order and protect life.
Then we have a gal prancing around, being mouthy, failing repeatedly to follow the simplest of instruction to leave, then when she does basically leave she TURNS AROUND and starts walking right back! And it does not stop there. Now the officer she's defying attempts to detain her and what does she do? She resists. She does not sit down on her own. She does not roll over face down on her own. No. This poor gal had never been taught that in real life SHE is not the center of the universe and actions will have consequences.
What I saw in the McKinney pool party video is a clash of expectations. Police expected to have reasonable instructions obeyed. Teenage brats expected the police to respond just like their parents when reasonable instructions are disobeyed; nothing. The teenagers were wrong. The police are not their baby sitters like momma and daddy are. Parents of the unruly children should be holding their heads in shame, but more than likely will be interviewing lawyers to see which one can garner the biggest payday for them.
I think every police officer on that scene deserves a commendation, if for no other reason being willing to respond to sorry crap like this when we call them. Children of these police officers should hold their heads high, knowing their parents are willing to step up when called to do so. Oh, and it's not for a whole lot of money either that they do this.