I've actually wanted to write a story like this;

Have an ultra-brutal "antihero" character like Punisher, who does extremely violent shit to many "only slightly evil" parties. Each time, as part of their calling card, they leave behind a message to the effect of "We do not have a fair court system, and so I am creating one." Biggest victims include judges, but not many lawyers - and they aim for an end result where large organizations don't try to lobby their way out of problems, but instead argue them on true merits in court.