Most of the time, if a child is abducted, it is the other parent in a post-divorce situation, rather than a kidnapper / molester. But we do see stories about those occasionally in the national news, so most people are "aware of the danger".
Ditto, I suppose, for CPS getting called by an over-reactive neighbor upon seeing a child wandering around without supervision. These types of stories also make the national news, for whatever reason, so most people are "aware of the danger".
And thus, we live in a climate of fear. Yay!
For the record, I spent some parts of my childhood wandering around in the woods alone (or with friends) where I could have: fallen down a hill, drown in a stream, fallen out of a tree, etc., etc., etc. without a reasonable possibility of timely rescue (no mobile phones back then). And I somehow survived. It is a shame that most kids in urban or suburban areas won't get a chance to do this anymore.