when a civilized people are confronted with the denial of a civilized system of justice, some percentage of normally-civilized people will eventually consider whether justice is something they should look to the system to provide.  

Vigilantism grows out of a belief that society can't administer justice....I'm sure the Supreme Court and various players within the Justice system as well as in government will all wade in to voice their disapproval should any such thing occur as a result of their collective inability to address their responsibilities.