Being reported as maybe. But incitement and abuse has always been illegal and doesn't have much to do with freedom of speech. E.g. see Bob Vylan at glasto calling for death of people... is that really what we want? OK it's no where near as bad as actually killing people, but it's still not ideal!

Sweden now famously has a very right-wing party in its ruling coalition.

While this might be true, the police are the ones who decide if they will prosecute. There’s no such thing as pressing charges or deciding to drop charges as the victim of a crime in the UK. The police will investigate and decide, so the warnings written on the walls of buildings are not really worth anything.

You can however do things like refuse to give evidence to torpedo the court case if you wanted to functionally “drop the charges” but if there’s still a chargable offense in the eyes of the police and credible evidence otherwise then the court case can still proceed regardless of your feelings.

> Is there a reason you find this particularly disturbing?

It's contrary to the human right of freedom of speech. It's bad for all the same reasons that lèse-majesté laws are, but is even worse because its scope is so much broader.

These signs (if phrased in this way) are slightly misleading. I doubt anyone is ever prosecuted for just being insulting. What happens is you'll be asked to leave if you're aggressively rude and if you refuse to leave then eventually the police might be called.

While real countries might have laws against insulting a public servant or laws against insulting any person, this particular Swedish law also explicitly criminalizes any speech or behaviour which "is intended to hurt the self esteem" of a public servant, as well as any "accusations against" a public servant.