It's nice to know that it isn't only prosecutors in the USA who are utterly incapable, or just flat unwilling, to admit when they're wrong. Prosecutors in Italy have officially appealed Amanda Knox's appellate acquittal. Because despite the total lack of any credible evidence against her and the great weight of reasonable, objective evidence that points solely to a third guy while Amanda and her new beau were far away at his apartment, prosecutors remain "utterly convinced" Amanda and Raffaele were involved. They just sense it. In their guts. Or their tingly thumbs. They can't just let it go, admit that they were wrong, and let these two young people they so grievously wronged try to rebuild their lives.
The same thing happened to the West Memphis Three, who weren't just exonerated, even though everyone knows they didn't kill those boys. No, prosecutors insisted that they could only be released if they pled guilty. It's such a sham and no one doesn't see exactly what happened. The prosecutors wouldn't have let a guy off death row if they thought he was a Satanic killer of young boys. We all know that. But they just couldn't bring themselves to admit they'd got it wrong. And the 3 men who had already spent nearly 2 decades in prison for a crime they hadn't committed and who finally had real hope of getting out before their entire lives were wasted (they're still in their 30s), so they really couldn't turn down the option of a plea, no matter how offensive it feels to plead guilty to a crime everyone knows you didn't commit.
These two cases are hardly isolated. The number of DNA exoneration cases in which the prosecution has refused to accept that the results make it pretty clear the defendant wasn't involved is pretty high. Even if the theory was always that the defendant acted alone and the semen deposited in the victim does not match, they'll all of a sudden say, "Well, gee, there must have been a second perp." Not all prosecutors do this, of course. There are those who get that the job requires correcting mistakes and who freely, even happily, accept this part of the job. But there are an awful lot who can't ever admit mistakes.
I'm just glad to know it's not an American thing. It's a prosecutor thing.