Saying that it was tax payers.
The principle is universal, the first photographer was needlessly antagonistic yes. Was the treatment of the police justified, no.
as for the lady admitting to an offence. No she admitted to cycling on a street, not to a simple open and shut offence.
Also I wouldn't say that its a good use of police time to go and hassle someone filming something, then when they aren't able to 'do them' for that, pull something else out of the air.
If the officer had asked about that first then its possible that was his intention. However it is apparent that he spent a dis-proportionate amount of time on the photography. Kinda wrong don't you think?
Also as to my first hand experience regarding prejudice wouldn't you say that is worrying?