Because my idea is that it wouldn't be the government designating them, but judges. Just like a judge already today has the power to lock you up for life, but only after a lenghty rule of law process.
But the trouble is judges are human, and if the boss of your boss who could shut down your court and turf you out is loudly proclaiming "will nobody rid me of this troublesome Russian"... what lawful ruling will the judge find to appease their master?
The other thing that sprang to mind was the US interning their own citizens in camps. Would you be in favour of internment camps across Europe for all citizens with any Russian heritage, preemptively locking them up in case they might provide succor to The Enemy?
But the trouble is judges are human, and if the boss of your boss who could shut down your court and turf you out is loudly proclaiming "will nobody rid me of this troublesome Russian"... what lawful ruling will the judge find to appease their master?
The other thing that sprang to mind was the US interning their own citizens in camps. Would you be in favour of internment camps across Europe for all citizens with any Russian heritage, preemptively locking them up in case they might provide succor to The Enemy?