Examples I have seen or see on a regular basis.
Children pushing in queues and the parents standing by doing nothing. Such as queuing for the slide at the swimming pool and people allowing their children to barge to the front of the queue.
Parents have been asked by school repeatedly not to let their children scoot or ride bikes in the school playground. Yet every day there are children zooming around nearly crashing into people.
Parents letting their kids run in the road and meekly saying "watch the road" when the kids have already run into the road.
Recently at a sports club my child attends, some young who should have been supervised children badly and deliberately vandalised property.
Letting children run around in car parks even though this is dangerous with cars moving around.
A child at my dcs school has been really badly behaved two days in a row where they've been called to speak to the teacher. Think hitting, swearing at the teacher, walking out of class, swearing at other children, throwing in class. Saw the mum treating the child to an ice cream after school 🤷♀️
Letting children run riot in supermarkets running up and down the aisles with trolleys bumping into people.
I've had to step in on more than one occasion over the years where a child has pushed in front my child or seen a child doing something very dangerous and have had a mouthful of abuse to thank for it.