A few cans of library worms

Editorial
There are subjects that one learns not to talk about in uncertain company. At the moment, Brexit is most certainly that in the UK while I imagine Trump and gun control (or in their incredible lack of it) serve the same role in the USA. But there are specific library subjects where one has learnt that raising them runs the risk of exploding the room. So, in the proud PLN tradition of never knowing when to shut up, here’s a few that will get you angry, nodding or groaning.
The firs