Additionally, truths like the existence of jury nullification are rare to ever rear their head inside a court room, and the judges will almost certainly never mention the existence of such things.
Believe it or not, state Bar laws forbid attorneys from tellings jurors that they have the right to nullify. If an attorney, most likely a defense attorney, we're to address the jury and let them know they had the power to judge the "rightness" or constitutionality of a law they would be arrested for contempt of court and disbarred, losing their state issues licence. So, attorneys never are allowed to speak the truth out of fear of losing their own life and liberty. Pretty diabolical if you ask me. So, you are right, it's up to us to get the truth out.