The cop was being fairly reasonable for the larger portion of the video. The punch seemed like a knee jerk reaction to being bitten, he shouldnt have done it, but it wasnt like he thought it out. She conitnued to resist, she got sprayed. Thats what happens when you act like a douche towards the police. It doesnt really matter what your being arrested for, once they start to put the cuffs on, you are probably going to jail. Let it go, dont resist or some crappy stuff will happen to you. Go to jail, bond out, then fight the charges.