He Was Arrested for Promoting Jury Nullification. A Federal Court Says That Was Illegal.

A federal court has defended the right to hand out information about jury nullification: the possibility for a jury to find a defendant not guilty because they disapprove of the law that was used to charge the defendant.

As I understand it, the reason for the right to be tried by a "jury of your peers" is so that they can protect you from prosecution under an oppressive law.