That is different. Imagine a criminal who stole some BTC from you. If he/she gets killed during the arrest, the government can't possibly give your BTC back.

And that's when you implement your 5th amendment right... oh, yeah they arbitrarily got rid of that without passing a new amendment. "obstruction of justice" charges are blatant violations of the 5th amendment. The government just doesn't give a fuck.

...

Scatter your Bitcoin around to at least four wallets ( I would have two or so online and two or so on hardware like Ledger or Trezor).  Save two of them (say) for .gov when they come calling.  And have other BTC hidden away.  Make sure they are mixed to cover the trail.

When The Man starts threatening, give up the smaller wallets (if you have covered your trail well).

Almost NO ONE can withstand torture.  If giving away the decoy BTC wallets does not stop .gov, then nothing will.  Once the torture starts for real, you would give them the others.

But, it is worth a try to let them have the decoys first.

This comic strip comes to my mind right after reading OP's post.

To save yourself from torture, don't let anybody know (or even suspect) that you may have coins.
To protect coins from extracting by torture, use
-Timelock, set for years
-Multisig, with co-signers out of reach of police.