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

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.