At the park today an elderly Chinese lady was standing just outside the fence that surrounds the park taking photos, I saw her but didn't think much of it until a man came over and asked her if any of the kids were hers and if not she shouldn't take photos she didn't appear to understand and spoke to him in her language and he told her to piss off and called the police. In the meantime a group of around 15 kids approached I think they looked to be around 11/12 years old a d started hassling her and asking her if she taken any pictures of them. She was confused and upset and walked off so the kids followed her, at this point I warned them to leave her alone and if they continued to hound her I would call the police about that. The kids had rung their parents who started arriving in dribs and drabs and they started hassling the women who had returned because the kids wouldn't let her leave. 2 pcs then showed up and started to speak to her and when she couldn't understand they just spoke louder, one PC even turned around and joked to me that he was going to arrest her, I don't think she saw the funny side. Eventually they just let her go but I was left feeling a bit embarrassed by the total overkill and the impression left on this poor lady