Acrosstheuniverse "Am I the only person thinking this thread is borderline hysterical?" well you are the first person to mention lynching! No one has suggested that.
"This man is playing with children in a playground, watched by the parents, who have no problem with it."
In the opening post it says "catch, hide and seek - not really many places to hide there, mostly the kids are in our sight" So some of the time the kids may not be in their parents sight at all.
"How can he be grooming kids when he is playing with them in full sight of the parents?" Have you read the poster who said she was raped by someone who she had known for years (getting to know them in similar circumstances)?
"Perhaps he is lonely, genuinely likes children..."
Sadly, in this day and age, all adults need to know it is not acceptable to play with random kids. You can leave yourself open to all kinds of accusations. So whether he is lonely, or has learnig difficulties or autism or any number of the reasons listed here, for his own benefit, chasing, catching and seeking out children who are hiding in a public park is not a good idea unless he is a family member.
JacquesHammer "Seriously?? What are single men supposed to do....avoid public places?!" That is a ridiculour comment. You know that single men are welcome all over the place, public places, businesses, shops, pubs, cafe's etc. But parks full of kids are really the last place childless adults should be hanging around unless they have gone their with a friend or relative with their children.
"There's an old boy I used to see regularly at the park. From talking to him - I know controversial - I discovered he and his wife had lost their only child when they were young. He got simple pleasure from watching children play in the park."
No one is denying it is hugely tragic for anyone to lose a child and this old boy is watching kids but the OP said this man is playing with them. It's different.