@JTT,
In Great Britain, in the 1970s, there were a number of miscarriages of justice where Irish people were given long prison sentences for allegedly carrying out IRA (Irish Republican Army) bomb attacks.
One group, the Birmingham Six, were sentenced to life imprisonment in 1975. The prosecution presented evidence that they had confessed, and also expert forensic evidence said to show they had handled explosives. They made 3 appeals, in 1976, 1988, and 1991. The first two were turned down, and their third appeal, in 1991, was successful. New evidence of police fabrication of their confessions and suppression of evidence led to the Crown withdrawing most of its case against the men.
The Court of Appeal stated about the forensic evidence that the expert witness Dr. Skuse's conclusion was wrong, and demonstrably wrong, judged even by the state of forensic science in 1974.
In 2001, a decade after their release, the six men were awarded compensation ranging from £840,000 to £1.2 million.
A famous senior judge, Lord Denning, said said that if the Birmingham Six had been hanged “we shouldn’t have had all these campaigns to get them released”. (He had been forced to resign in 1982 after saying that He said that "black, coloured and brown" people did not have the same standards of conduct as whites.)