"Individuals acting in support of the rule of law" is generally the exception, but there is something useful in the implications you've brought up. That is, the uncomfortable proximity unlawful judgment and execution has to lawful judgment and execution; they're both ideologically-driven.

That they're similar in this manner doesn't mean that we can't have laws and law enforcement because they're inherently violent and tyrannical or anything, but it does inform how seriously and dispassionately we should approach their means and ends. I don't think that it's particularly radical to call an abuse of judicial power terrorism. What else to call, for example, a judge who robs entire communities of their youth in exchange for backroom deals with private prisons?