An issue with this situation is we don't know what happened before the video started. I have doubt that this situation happened as a random act i.e. the police officer walking by and just deciding to approach this lady. I think it is more likely that she may have refused to leave or something prior to what we see. IF that is the case, she is in the wrong. It would be considered trespassing at that point. More info is needed guys. I was yelling at my screen almost 2 hours ago when I first saw the video but after I thought about it, we need more info.