I was shooting night life in my town and showing the overwhelming population of Police. Last year I had 4 officers in my dorm room at 4:00am(roommate and I were sleeping) they had to "change my court date" and try and pressure me into letting them search my room. My court date was for an underage ticket that night. First underage is $300 second is $600 something and the third is over $1000. This is a very rural town. in the surrounding towns underage tickets are less than $50, and the officers only hand them out if there is a disturbance. Here they stand outside the dorms trying to catch kids as they walk back to the dorms minding their own business.
I still fail to see a valid reason for the presence of a camera here. An overwhelming police presence? Some people actually want that, You will understand that better when you are older. Where I live you can't buy that and I live smack dab in the middle of two overlapping jurisdictions (Seneca Nation Marshals, Catt County Sheriff) in addition to local and state police departments.
This overwhelming police presence is there for a reason, now tax payers are not going to sit and pay a dozen police officers to sit at HQ all night waiting for phone calls, it doesn't work that way. Sure, sitting in wait for a sure thing citation is a dirty tactic, but it's not illegal, if it where DUI checkpoints, patrol cars stationed at road work sites and many other similar tactics would be illegal. These tactics generate visible results that maintains that presence for when it is really needed. I'd put money on it that that little town you live in is one place where the standard issue rapist is likely caught within hours of commission/report of the crime, where it could take weeks or months around here. From what you put in that post I quoted it sounds like you had half a notion to start a battle that was lost long ago, I'm sorry but staying out late drinking or whatever else is not a right, but a privilege reserved for those at whatever age stated in the penal codes for the given jurisdiction.
I'm sorry you got burned on this by having deleted your photos but, what they are doing there is not of real consequence. Going back to my previous post, Police officers handing out citations isn't really a photoworthy event, Doing so only gives the impression of looking to stir up trouble. Be it public or private, the police departments job is to maintain the peace and if they see anything that gives them the impression of stirring up trouble it is their duty to try to dispatch it before it becomes disturbing the peace. This is why they approached you. This little snare has been abused as of late in the name of national security but I believe this is one occasion where it was not. You gave them the impression of trouble making and then walked right into their trap. Again I am sorry you got burned, but atleast you learned something in that you do not have to delete your images when they ask. I also hope that this helps you be a little more conscientious in your situation weighing and decision making keeping in mind that, just because you can does not mean you should.
*EDIT*
Dammit, that'll teach me to take forever posting in a hot button topic...now I have a dozen posts to catch up on.