* People are losing their freedom of privacy in the name of safety and most accept it. Many are likely unaware at this stage of the trade-off.
* One activist was in presence by happen chance, otherwise this likely would have gone unreported.
* The database _currently_ only keeps peoples data for 30 days. When the UK leaves the EU, this will likely be extended. China has already experienced multiple data breaches.
* It's unclear what data is kept and deleted, I suspect that metadata may be retained indefinitely.
* The money being spent on these systems could be spent getting more officers on the ground. I have no doubt they are sinking millions of pounds into this project.
* The police initially started testing this system illegally, there were no repercussions.
* The majority of people being arrested as a result of this technology are probably not the worst people in society. I believe this will be used to disproportionately target poorer people and petty crimes.
* Telling an officer to "fuck off" or "piss off" is not a crime. It's not an offense to be rude and you certainly shouldn't have to "Wind your neck in" in fear of a public servant.
Yes it is:
From the Public Order Act 1986 (http://www.legislation.gov.uk/ukpga/1986/64)
A person is guilty of an offence if, with intent to cause a person harassment, alarm or distress, he—
(a)uses threatening, abusive or insulting words or behaviour, or disorderly behaviour, or
(b)displays any writing, sign or other visible representation which is threatening, abusive or insulting,
thereby causing that or another person harassment, alarm or distress.
This is largely true but
> It's not an offense to be rude
is rightly or wrongly a very broad grey area.