Yes, the fact that large number of criminal activities have effectively been decriminalized would tend to beg the question why this is being deployed at a political protest.
The implication of police state is that they care about crime, but they do not care about crime. Anyone can turn up in Britain, claim asylum and will be sent to a hotel closed down for their comfort. Many visas were denied for speakers at this protest.
It is a politician state, not a police state. Facial recognition is being deployed against political opponents, not criminals.