One thing that you have to remember is that what happened to Inky, happened in Turkey. A whole different culture. A whole different mindset. It doesn't really translate to the US or Europe.
Even within the US, Canada, and Europe there are local cultural differences. What I wouldn't dream of letting a child do in Los Angeles is not a problem here in North Florida. When I lived in Knoxville I would not let me son ride his bike on the street, it was way too dangerous because of the way the roads are designed, but here in North Florida it is relatively safe.
There are so many factors that go into what is right and appropriate in allowing a child a bit of freedom that it truly is a judgement call on the part of the parent in their given situation. Not only is there the age, maturity, and responsibility level of the child, but there is also the neighborhood the family lives in.
Last night about 9:00 PM, I got a knock on my door. It was one of my neighbors who I had never met before. She was frantic. Her mother had had a heart attack. She needed to go to Augusta, GA. She only had $26, her husband was out of town, and her next door neighbor that she was friends with was gone. I loaned her $80. She said her husband would repay me tonight when he got back into town. Do I believe that I will see the money again? Yes, because of the neighborhood that I now live in. Would I do that if I lived in LA? Uh, probably not, I'd never see the money again.
As for Halloween, I worried more about my cat getting taken and used for a satanic ritual than someone kidnapping my kid. On Halloween night, my cat stays in the house whether he wants to or not.