It can happen if you are a political activist in any fashion. Nothing violent, just speaking out for rent control and against gentrification can get you in trouble. Or hanging around with the wrong people.
When it happens, you want to leave them as little rope as possible to hang you with. As I said, the courts still are honest and they won't make up evidence, but they will take everything they can find to make a case - and to learn about your structures and networks while they are at it.
You are right, that in real oppressive regimes all bets are off. If they want to get you, they won't stop at their own laws. But even then, these techniques are useful against industrial espionage. If you are doing business in certain countries, the "evil maid" is quite real...
As for the dissenters, I’m sure they would appreciate their co-conspirators remain secret.
Can you provide any evidence at all of police or "thugs" (or anyone, really) kicking down doors to get at trade secrets being a common problem? Because there are countless news articles of police raids seizing computers to stop child porn[0].
I speculate any tool billed as "anti-forensic" will be used for immoral purposes more commonly than moral purposes.
[0] https://en.wikipedia.org/wiki/Jared_Fogle#Child_pornography_...
That does not mean it should be banned. Knives are used for many things from cutting food and opening boxes to killing people. Nitrate based fertilizers can be used for vastly improving crop yields but can also be used for bombs. Encryption can be used to protect your sensitive personal data from criminals and prying eyes, but can also be used by the criminals themselves to hide their activities.
No state (even if it was the most ethically illuminated utopia) has the power to protect every person in every place at every time. Banning defensive tools is asinine as rarely does it mean that a criminal won't use them against you.
It is doubly foolish to believe that the police are the only users of forensic software when there is credit card theft and multmillion dollar ransomware rings out there. Robbing a bank by force or by heist is foregone jail but snatching a laptop from a banker? Far more petty in risk and disguised as mere property theft as opposed to the data theft.
Could you expound on what this means? In the USA/UK, people most "at risk" of police kicking down the door seizing their laptops/computers while they are still running are child pornographers.
Perhaps this can be used "for good" under oppressive regimes (i.e. if you are a dissenting journalist) but then I think you won't get a fair trial anyway and having a kill switch just means more prison.