Not unlike the old Soviet GPU
In his autobiography, Chronicles of Wasted Time, Malcolm Muggeridge relates a story where reporter Ralph Barnes interviewed a man apparently fairly high up in the Soviet GPU. He asked:
"Why is it that in the USSR innocent people get arrested? The GPU man, it seems fairly shook with laughter at this, to the point that it was quite a while before he could get his answer out. Of course we arrest innocent people, he said at last in effect; otherwise, no one would be frightened. If people are only arrested for specific misdemeanours, all the others feel safe, and so are ripe for treason. . . . By making justice subjective and arbitrary, every citizen can be plausibly arrested and charged at any time, with the result that they live in a permanent state of incipient guilt and fear."
The UK seems to be moving in the same direction.