Eva888: Nowadays I wouldn’t allow a little girl or any child of mine to walk far alone, with friends or siblings, maybe.
My grandchild went to the swings a few doors down from us at Xmas, I figured it was safe to let her but her Aunt followed soon after only to see a drugged up creepy looking guy in the playground where she was alone. So much for leaving kids to fend for themselves.
And this is a great example of anecdote vs. evidence:
Violent crime rates have been dropping consistently for the last 20-30 years (US figures but other countries are fairly similar).
Most child offenders are known to the victim (figures run up to 95% or so depending on how you assess it), not random bogeymen hiding behind bushes in parks.
So the thing you're worried about (anecdote) is more or less the opposite of what you should be worrying about (evidence).