So here's a question. What would someone have to do before you all would be ok with calling the cops? Is an actual crime (currently in progress) the only reason one should contact the cops? Apparently suspicious activity isn't enough. I was asked to justify my report in terms of Terry, then when I articulated that I was told that since the activity in question was not illegal it didn't count. I found that funny, since it seems to imply that the only justification for a Terry stop is witnessing a crime in progress. And again I reiterate, non-LEOs are not bound by Terry no matter how much some people on here apparently want them to be.
You are correct -- the guidelines for a Terry stop, as enunciated by the Supreme Court, apply to the police, not to the public. But as the public you don't have any right to interrogate or to detain a person anyway, so it's a moot point. (Yes, you may
ask a person who he is and what he's doing, but you have no authority under any circumstances to compel him to respond, or even to acknowledge your presence.)
So you have a right to call the police if you feel hinkey. Just like Suzie Soccermom has a right to call the cops if she sees someone carrying a holstered handgun in a place where doing so is completely legal. The question is what the cops do with the call. Properly, the dispatcher should ask, in the case of either a photographer or a man with a gun, "What is this person doing that you think is illegal?" If Suzie Soccermom says,"But ... but ... but he's got a GUN!" the dispatcher
should terminate the incident right there by saying, "M'am, that's legal in this state. Have a nice day."
In the case of the photographer, the caller would say something like,"Well, he's ... he's ... he's taking PICTURES! Of CHILDREN!!!" Again, the dispatcher's question should be, "But what law is he breaking?" Absent a reasonable suspicion
based on clearly articulable facts that a crime has been committed, is being committed, or is about to be committed, a police officer has NO RIGHT OR AUTHORITY to initiate a Terry stop. Given that there is no indication of a law being broken, you have to wonder about the professionalism of a dispatcher (or the policies of the department) if a dispatcher sends out an officer on a call where the caller cannot provide any indication that any crime is being committed.
Taking photographs is not illegal.
Taking photographs of YOUR children in a public park is not illegal -- even if you didn't grant permission.
Taking photographs of fully-clothed children playing in a park home and enlarging said photographs to seventeen times full life size is not illegal.
Deal with it.