IMO one of the worst things I've seen happen in my lifetime is the extent to which complete paranoia over the intentions of anyone they don't already know intimately has destroyed a huge amount of perfectly normal social interaction, and essentially helped to destroy the cohesion of society / communities.
Lonely old folk can't talk to their neighbours kids for fear of being labelled a dirty old man, so they end up spending their final years alone.
Kids end up growing up unfit, obese and utterly clueless about life due to their parents abject paranoia about the supposed dangers involved in letting their kids play out, ignoring the virtual certainty of poor health and an early death that awaits their obese kids who've grown up without any life skills or understanding of risk themselves.
Kids grow up sensing that paranoia and knowing that it's somehow wrong to make eye contact with, smile at or god forbid, actually talk to someone they don't already know, and carry that into their adult lives.
Parents can't go out because they can't afford to pay for a babysitter / don't trust anyone to look after their kids.... when I was a kid my parents barely ever paid anyone, they were members of a babysitting circle where totally none CRB checked other parents would swap baby sitting duties with each other for free
Those without money feel they can't hitch anymore, so simply don't end up going anywhere, don't get to go see the world, go festivalling without a bean to their name, go join a travellers convoy etc etc
And inevitably society and communities simply stop functioning, and all our lives are demonstrably poorer as a result.
All because of a relatively minute actual risk of child abduction by a stranger - a risk against which the best defence is actually for others in the community to know you, know your child, and be prepared to intervene themselves if they witness your child being carried off by a stranger / wandering off towards danger.
It's like we're allowing Thatchers vision of 'no such thing as society' to become reality all because we're so shit scared to actually notice that 99.99% of people are actually decent human beings, or at least manage to hold in check their cuntishness for the sake of appearances, and that we actually make all of our lives poorer by avoiding interacting with each other.
For reference, the current likelihood of any child being subject to an attempted abduction by a stranger in the UK before they make it to 18 is 0.0019% or 2 out of 100,000, and most of those aren't successful.
ps I have co-ordinated a successful security response to an actual child abduction attempt, so I'm not denying that it can and does happen, just that society has allowed this relatively tiny risk to override everything else, and largely destroy all the good that comes from communities who get to know each other and look out for each other and each others kids