If your kid is jumping around, people are going to look at him. He has drawn their attention. And if they look at him jumping around, they just might take pictures of his antics. The woman overreacted.and for 5 mins ( which seems like an eternity ) he is staring at you and your kids
was taking photos ...
i am sure it looked like he wouldn't leave them alone.
from the lady and her parents' point of view he hounded them
The OP was seated on a bench, while things happened around him, which he photographed. If he cannot do that, then Cartier-Bresson, Robert Frank, Garry Winogrand, and so many others, were wrong to photograph what went on around them.
Have you seen the video of HCB stalking his subjects, surreptitiously and quickly getting a photo before they knew what was going on? Geez, what a creep!