This cannot be allowed to continue..
There should be some kind of education for all police and community officers as to what is legal and what is not. And those continuing to act illegally should be fined and if persist should be dishonourably discharged, as they are breaking the law not following it.
The irrationality of people with proper cameras being stopped over those with just compacts is tragic. Even a semi-retarded half-brained monkey would pick something more subtle than the attention grabbing item that a dSLR tends to be if they didn't want to be suspect, which makes one suspect that these police are even stupider than the monkey in question!
You can find another article on this subject here - http://www.dslrdoctor.com/articles/page/fight_for_your_right_to_take_photos/
Now it is stupid to try 'fight' the police, but you should never surrender your camera or film/memory card, tell them if they want to do that they require a court order, and if they need to take you down to the station, at which point they'd likely let you go as having no basis, which means you could also potentially charge them for wrongful arrest.
I find the whole situation crazy, heck i found it bad enough when people started calling pedo just because someone shot a photo of a child, taking no consideration for if the shot was of a non-sexual nature, that paranoia made most photographers stop and go 'Yeah that would make a really great photo, but no, i don't want to risk it'.
And so now it's been furthered to even crazier levels once again to a new level of paranoia which makes even myself scared to photograph in London in popular places or just general areas with good scenery due to fear of being innocently victimized under false pretenses.
When I travel to Europe I don't have these concerns, rarely will the paranoia come even close to this communist style clamp down on photographers which once used to happen in Russia and be mocked by us, now look how the tables have turned on us! And what's been done to stop it? Not enough!
I'd recommend all photographers keep a concise document on them with FACTS about your rights, and examples of court cases, so if stopped and questioned, you can immediately call upon precedents and law to support your case, atleast as a measure to try to protect yourself against becoming another victim in this war on photographers. Anyone know where we can go to find Freedom???