Badger: I would argue that a more nuanced view is appropriate.
Nullifiers should obviously be weeded out during voir dire and juries certainly shouldn't be made aware it in court but I don't think it's really possible to prohibit entirely without unconstitutionally interfering with jury proceedings
I like the take on it in
US v Moylan:
I would argue that "To Kill A Mockingbird" style racist verdicts have less to do with jury nullification and more to do with a systematically biased jury selection that excluded minorities. On the other hand, jury nullification established the freedom of the press in the colonies, prevented the conviction of Northerners violating the Fugitive Slave Act, protected Vietnam War protestors, and other stuff like that.
I think in certain limited circumstances jury nullification should be tolerated because ultimately if the existing law and its enforcement conflicts so strongly with basic morality that twelve random peers of the accused unanimously agree to disregard the law after taking an oath to uphold it then that probably means the law is better off not being enforced in that instance.