"Anyone would think the MET/Home Office had an agenda against a certain section of our society."
Well, quite. Instead of all that police effort at the carnival, send the police round to our street, where some dog walkers don't scoop.
As for facial recognition - the Guardian periodically castigates Google because AI facial recognition isn't good at identifying people with dark skin. Whether it is a programming issue or an AI training issue, it's probably better to try the software out in Notting Hill rather than Inverness, isn't it?