Really, we may want to make sure we have a system where victims of crimes aren't afraid to come forward for help, for fear that coming forward may result in an increased likelihood that they themselves are caught for a crime they previously committed.
Even typing it out, it doesn't feel right. We obviously want to catch criminals, even those who are themselves victims of crime. But we also need to be practical and recognize that breaking cycles of victimization wherever you can is a social good, and that anything that makes people too afraid to interact with the law enforcement and justice system is problematic, because it expands the outlaw class.
I don't know if that's right, but it is my immediate thought.