Northpointe's Biggest Error
Besides being mindless bigots, of course.
Even if dark skin correlates with higher recidivism, it's irrelevant. Does having extra melanin actually cause you to be criminal? This is correlation without causation.
Economic and social disadvantages may well be more common among slave descendants than among others, I dunno. Such factors, however, are also common among other groups as well. But even using this, which may well be causation, would still be unjust. This particular person may not be behaving badly at all. It is unjust that the computer should put this person into a group it defines and then penalize him for being in that group.