We see it all the time when prosecutors conduct political prosecutions and when they prosecute the innocent in order to build their conviction record. We see it when judges fail to prevent prosecutors from withholding exculpatory evidence and bribing witnesses and when judges accept coerced plea deals that deprive the defendant of a jury trial.
We just saw it again when federal prosecutors recommended a six month prison sentence for Lt. Gen. Flynn, the former head of the Defense Intelligence Agency accused of lying to the FBI about nothing of any importance, for being uncooperative in the Justice (sic) Department's effort to frame President Trump with false "Russiagate" charges. The Justice (sic) Department prosecutor said: "The sentence should adequately deter the defendant from violating the law, and to promote respect for the law. It is clear that the defendant has not learned his lesson. He has behaved as though the law does not apply to him, and as if there are no consequences for his actions."