I may have been a bit strong with my wording, as I am not a lawyer. But:

http://en.wikipedia.org/wiki/Jordan_Halliday

> He was indicted by a federal grand jury in 2009 on charges related to resisting a federal grand jury investigating local illegal animal rights activities, mainly concerning fur farm raids in Utah. He was jailed for nearly four months under a contempt of court order to compel him to testify.

Most recently: http://www.salon.com/2012/10/19/grand_jury_resistor_leah_rel...

For more: http://grandjuryresistance.org/