This charge of displaying threatening or abusive writing likely to cause harassment, alarm or distress seems very selective in application.
“We published a post on one of Twitter accounts on Friday 21 January, asking the public to not remove posters, including those containing offensive material, in the city after sharp objects had been found behind them.
“This public safety message was intended to make the public aware of the dangers of potentially removing a poster, after glass and pins had been stuck behind the posters.
“We would reiterate that if anyone finds such a poster that they leave it to the relevant authority to remove it safely rather than risk injury.”
I can't even figure out how you would sandwich sharp objects between the curved surface of a lamp-post and a sticker, without ripping the sticker itself as soon as you put it up. I am far too young to have arthritis and I don't think I have the manual dexterity for this kind of feat!