In the last week:
My sister has come home from a holiday fuming because the hotel staff told off her 2 kids for tearing around the corridor and making too much noise
Two neighbours have got into a spat because one told off the other's child for throwing stones at a cat - apparently she should have come and spoken to her and not directly to the child
I heard of a shop assistant who has received a verbal warning for telling off a child who was taking the various bread rolls out of their baskets and putting them back in other baskets (bread rolls were different prices, as displayed on the baskets). The mother complained to the manager and threatened not to shop there again.
When did this preciousness about anyone telling off your child, no matter what they're doing, start? When I was a child you'd have got another telling off from your mother for annoying a neighbour/shop assistant. Now you get defended to the hilt.