There's more to it than that. There's the right to appeal, yes the jury can be captured, the lower courts captured, the appellate courts, the supreme courts, and even the supreme court, but even then, mob justice won't be just. Our founding father's didn't execute the judges and officials. They declared independence, not by sword, but by law. The law was enforced by sword, as law must be. They never had a problem with rule of law, they had a problem with confiscation of arms and gun powder, with paying taxes with currency that was in extreme scarcity, and with paying taxes foisted on them by outsiders.
RE: Know It All: Thinking You Know is Worse Than Not Knowing