locked up for years, in the wrong. They were innocent.
Exactly. And it did the UK no good at all and cost many lives as well as substantion cost. The only way to fix things was to let guilty people go free as part of the process as at some point you cannot keep apportioning blame / cause / justification.
I get caught stealing merchandise from Walmart, ok? I'm approached by security and asked if I took something. Of course, I deny it. Then I am asked, do you want to see the video? I know they got me, so I say no and confess. Pretty simple.
How about something is stolen from Walmart ... I'm approached by a security guard who feels he needs to impress his boss and doesn't like the color of my skin or the slogan on the T-Shirt I'm wearing. They lock me in a room and say that they know it was me that took the goods and things will only get worse. It goes on and on for hours and I am scared and alone and need to get somewhere so eventually I say I did it just to get out of there. Pretty simple.
With your example minimus, they have the video as real evidence so they wouldn't bother 'asking' if you took it would they or needing to get any confession?
So your example is pretty weak IMO.