Hetty, just because you haven't seen something doesn't mean it's not happening, any more than geekesse having seen it proves that it has!
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The best (or worst) place for this sort of thing is local Facebook pages. Mine is a toxic place at best, where local busybodies like nothing better than to name and shame 'transgressors', and signal their own virtue from the highest towers. Since the virus, things have got even worse. I can't post sources, as it is a private group, but a couple of examples include a woman complaining that people 'who didn't need them' were 'taking' delivery slots for groceries. When it was all unpicked, it turned out that she had been unable to get one, despite never having used the service before, and was annoyed at her neighbour for carrying on as she had always shopped. The complainer had no idea about the circumstances of those using the service anyway. Without access to medical records, she couldn't possibly know whether people had underlying conditions, and neither could she know about other circumstances, such as access to a car for click and collect etc.
Another example is someone complaining about a woman who didn't go out to clap. The woman had her reasons, which are nobody's business but her own, but still, she was publicly called to account. It makes my blood boil, really - who do these moralists think they are? And why is 'their way' the only one that is 'morally right'?
The virus has made me realise just how easily a sinister government could get people to turn against one another, and how close we are to puritans with pillories for 'moral transgressors'.