Also a great example of how vindictive the justice system can be. Once you're a part of the process they will have decided that you are guilty and deserving of punishment, and they will seek out any avenue of attack they can.
I've recently listened to the podcast Serial, and another called Undisclosed about the 1999 murder of a high school girl in Baltimore. Really interesting listen, and a of a scary view into the criminal justice system.
"The wheels of justice turn slowly, but grind exceedingly fine." Exceedingly.