Could it be these two, I wonder?
http://www.reviewjournal.com/news/man-sentenced-probation-las-vegas-domestic-terrorist-plot
http://bigstory.ap.org/article/woman-takes-plea-deal-sovereign-citizen-case
They seem fit the info we know thus far.
Could it be these two?
“Sovereign citizens”
LaRouchies.
The media, of course, will brand them as “right-wing” nutjobs.