The show on Netflix "Making a Murderer" has some scary examples of this. Not only of the lying during interrogation but of just how pervasive this mentality is.

During an appeal to the 7th (iirc) District Court, the ADA's argument always came down to "What about Justice for the victim'a family?" like somehow it isn't even relevant anymore if they have the wrong guy or not - if they decided that the recently convicted was wrongfully convicted, it would be unfair to the victim's family to let him go, even if he isn't guilty.