“If a jury have not the right to judge between the government and those who disobey its laws, the government is absolute, and the people, legally speaking, are slaves. ”

Everyone needs learn of Article III courts. Welcome to Amerika, where the non-law courts are mere revenuers for the slave masters.

If it's a bad law, a juror can, and should, vote not guilty regardless of any thing a judge says. It's called Jury Nullification.