If you've ever had a friend get raped (or daughter, wife, whatever), you'd understand.
I understand your point, but in reality, it could just as easily have been a young kid with an otherwise clean record (but no political connections) serving a decade-plus mandatory minimum sentence for petty dope dealing instead of a serial-raping scumbag.
Considering the fact that over 2 million Americans are incarcerated today (and an ever-increasing number of those 2 million are there for non-violent, victimless offenses), it's critical that the corrections establishment is held accountable when events like this occur.
HOWEVER, I do happen to love it when Karma comes back and bites a rapist/murderer/terrorist/etc.