I agree that witch hunts are to be avoided, but the OP was clearly intimidated, on more than one occasion, and I think the man's behaviour does sound odd. Now maybe he is care in the community, and meant no harm at all, but maybe he wasn't. I think if I was a woman taking my kid to that playground on my own, I'd rather know about this, not so I could take my pitch fork, but just so I could be aware.