Care to name some?
The vast majority of cases I've looked into end up being a lot more than the initially presented "They Were Arrested For Saying Bad Words On The Internet!" story pushed on the internet.
In fact, I can't remember a single one where there wasn't a lot more, but that's not really more than anecdote.
There are many more cases of harassment by the police or arrests, the most recent example that comes to mind being Graham Linehan. These are clearly not as bad as prosecutions, but still create a chilling effect.
https://en.wikipedia.org/wiki/Twitter_joke_trial
https://en.wikipedia.org/wiki/Count_Dankula
https://www.dailyrecord.co.uk/news/scottish-news/glasgow-bin...