miscarriage of justice
US /mɪsˈkær.ɪdʒ ʌv ˈdʒʌs.tɪs/
UK /mɪsˈkær.ɪdʒ ʌv ˈdʒʌs.tɪs/

1.
erreur judiciaire, déni de justice
a failure of a court or judicial system to achieve a fair or just outcome, often resulting in an innocent person being convicted or a guilty person being acquitted
:
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The release of the wrongly convicted man highlighted a severe miscarriage of justice.
La libération de l'homme injustement condamné a mis en lumière une grave erreur judiciaire.
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The defense argued that the conviction was a clear miscarriage of justice due to new evidence.
La défense a soutenu que la condamnation était une claire erreur judiciaire en raison de nouvelles preuves.