Don’t forget about social media posts. In the UK, people are being jailed for those today.
Imagine if they used your past post history against you.
In the US if you make a social media post threatening the president you are breaking the law and can be sent to jail just as much as if you said it
No they're not. An incredibly small number of people might get arrested if policing cocks up. Nobody is being jailed.
Which posts are people being jailed for?