Jury nullification was originally used by the Mafia, i.e. threatening the jury members or members of their family.
Then the communists led by William Kunstler, Leonard Weinglass, Charles R. Gary (Hillary’s old Black Panther Party case leader, New Haven trial), and people from their law firms and CPUSA legal fronts (National Lawyers Guild and now the Center for Constitutional Rights).
If it works, use it. About time that our side did.
It was originally used on a free speech case. It was used repeatedly by people to refuse to prosecute underground railroaders.
It was used quite a bit during prohibition.
Up until the 1920’s every judge was compelled to tell the jury of their rights to judge both the law and the facts.