Paul
You're right, no one has copyright or a 'right' to privacy in public. There are criminal exceptions to that, but not likely to be an issue to most on here.
But you have to bare in mind that a photo which shows someone in a way that could be way which gives a misleading impression of them or their character, could lead to being sued, but thats civil law, and is dependent on publication.
The one thing that so far no ones cottoned onto, yet, is the Data Protection Act. A photo is Data, and if you hold data about someone you are restricted in how and why you hold it.
Because there's money in it for both Lawyers and people who've been photographed, its only a matter of time.
On the subject of matter of time, I think that also applies to photographing children. I would hazard a guess that in the not too distant future, someone will come up with the idea of making what some think is already law, actually become law.
Civil law, you need very deep pockets to pursue with not much chance of success.
Data Protection act requires much more date than a photo to apply
As I pointed out I have no problem with any civil approach
Otherwise it is a polite “go away or I will call the police “
Police should be civil anyway within the bounds of reason it is part of their duty
Being stroppy and rude to people asking what you're doing will only make that eventuality more likely.
AWp
Far easier and quicker to ask a few questions! Police officers have enough to do, without spending hours doing something that can be solved in a few minutes, and being called to things that could be resolved between the 2 parties by both being polite and open.
As for being brainwashed. No, the point of all of this is there are 2 sides to it. Having been on both sides, I have the advantage over you, the advice I've given is valid, you can chose to take it or ignore it, its up to you. But if you want a one sides discussion where all you read is 'ahhh, poor photog, did the nasty man want to know what you were doing?', then hard luck.