"I don't plan to take any pictures - Or at least, I didn't before you started making illegal and unenforceable demands... You do realize your clients are in a public place with no expectations of privacy, Right?"
Most Celebrity Vs. Paparazzi problems are self-inflicted. The celeb and/or their "handlers" tries to be a Primadonna (or just an Adam Henry - figure it out...) when out in public, and forces the photographers to do annoying and/or illegal a/o stupid a/o dangerous things to get the "money shot".
If you don't want your picture taken, don't go out in public places - and if you do go, put your best face forward (that means a little makeup and some nice clothes if you think you have an image to uphold) and face the facts that some people will pay for your picture. And they pay a lot more for your picture if you evade the photographers, so that is a losing battle.
Some of the most expensive photos are the worst ones taken - things like the Nick Nolte booking photo from the Malibu drunk driving arrest.
If I was presented with a situation like that without a pushy handler to deal with, the proper thing to do is to NOT stalk the celeb. Stay way back, get out the longest lens you have, and CASUALLY snap a few shots. Pose the rest of your party against the fence, then in between family shots zoom in over their shoulder and take a few pictures of the real quarry in the distance. Nobody will know but you.
--<< Bruce >>--