Injustice is the lack of or opposition to justice, either in reference to a particular event or act, or as a larger status quo.
The term generally refers to misuse, abuse, neglect, or malfeasance that is uncorrected or else sanctioned by a legal system.
Misuse and abuse with regard to a particular case or context may represents a systemic failure to serve the cause of justice.
Injustice means "unfairness." Injustice may be classified as a different system in comparison to different countries concept of justice and injustice.
According to Plato, he doesn't know what justice is but he knows what justice is not.
The Innocence Project provides a wealth of tragic cases in which the U.S. justice system prosecuted and convicted the wrong person.