Law enforcement shouldn't keep information about people unless they've been convicted of a crime?
Pray tell how do you propose a system of law enforcement can work without both these things. Or do you think that law enforcement is an unnecessary evil?
>I've read about this happening //
This being 'someone asked about their whereabouts'? Really. This is too much of an invasion of your liberty to simply confirm that you were indeed the person in a particular place?
Perhaps he bought something on ebay from a person financially linked to terrorist operations abroad the week before he went visiting a natural gas storage facility .. we don't know. The outcome for him was to answer a couple of phone questions; I find it really hard to see anything in this story that shows the SAR program has failed.
I imagine they get a few folks taking pictures. Photogs tend to take lots-and-lots of pictures, and want to get in places where other people don't, get close-ups and such. TBH that this might look suspicious doesn't seem especially unreasonable. The security guards don't know he's a professional photog.