Lysander Spooner

Individualist Anarchist.

http://www.lysanderspooner.org/

Wrote about Jury Nullification, the process whereby a trial jury can find someone innocent of a crime on the basis of the law being wrong (e.g. the behavior shouldn't be defined as a crime). His essay was called Trial by Jury. They must judge of the existence of the law; of the true exposition of the law; of the justice of the law; and of the admissibility and weight of all the evidence offered; otherwise the government will have everything its own way; the jury will be mere puppets in the hands of the government; and the trial will be, in reality, a trial by the government, and not a “trial by the country.” By such trials the government will determine its own powers over the people, instead of the people’s determining their own liberties against the government; and it will be an entire delusion to talk, as for centuries we have done, of the trial by jury, as a “palladium of liberty,” or as any protection to the people against the oppression and tyranny of the government.

Also wrote The Constitution of No Authority (No Treason #6) , which claimed that nobody should feel required to accept the US Constitution because it was a contract which they hadn't signed.