I don't think the legal process WENT wrong, I think that in many cases the legal process IS wrong.
We have removed personal responsibility from the equation.
For example, if an intruder breaks into your property and is perhaps a threat to your family, the "legal process" will incarcerate you for protecting family and property.
The legal process is found wanting in many cases, the child abuse cases in England most notably.
The inability to deal with the criminals at the heart of the financial collapse.....too many others to list here.