What's your threshold for when it becomes a problem? Should we wait until it becomes a problem, or should we try to stop this level of facial recognition?
You should also assume this is a proof of concept. It'll get improved and scaled down to run on every police vehicle, and on every camera the police already control.
Then it will be sold to the public as being successful (they are already claiming that in the article itself that it is successful). Then that will be used to justify them in other places.