Jury Nullification

Jury Nullification is the concept based on the Non-Aggression Principle (NAP) that if the government or any party in a legal case is seeking a punishment  that is too great compared to the accusation that by choice the jury or jurors choose to give a not-guilty verdict because the punishment outweighs the case at hand.

If a person has not harmed another in their actions, then they don't deserve harsh punishment of years of jail from the government.  This is most apparent in drug cases where the person is just using and not harming anyone and may even have a dependance which jail would not help them whatsoever.  

So based on the NAP, a jury might choose to give a not guilty verdict if they don't agree with the slated punishment for a nonviolent "crime".