I must be an innocent little soul.
If I was in the park with my children I would not object to anyone taking photos. I would assume that they would have children there.
My kids are only 7 and 4 so if they go to the park I go with them.
I don't think about paedophiles but, like I say, I am there so I can make sure mine don't come to any harm.
It might be different if I weren't there but I don't mind photos being taken.
Why would a pervert want to take a photo of a child on a slide?
I'm sure there's much more titillating stuff to be found on the internet.

__________________
Old aunts used to come up to me at weddings, poking me in the ribs, cackling and telling me
'You'll be next.' They stopped when I started doing the same to them at funerals.