@edgarblythe,
Here's what the local Sheriff has to say about the group:
Excerpt:
The lawman at the center of the action at the moment is Harney County Sheriff David M. Ward, who has less than a half dozen deputies to police the ninth largest county in the United States.
“These men came to Harney County claiming to be part of militia groups supporting local ranchers,” Ward said in a statement Sunday. “When in reality these men had alternative motives, to attempt to overthrow the county and federal government in hopes to spark a movement across the United States.”
. . .“I haven’t slept a full night in close to two months now. I have a lot of anxiety,” he told a reporter for public broadcasting. “What we’ve been threatened with here is civil unrest and the insinuations of armed rebellion,” he said.
https://www.splcenter.org/hatewatch/2016/01/04/bundy-sons-lead-antigovernment-extremists-militia-takeover-federal-wildlife-headquarters
The SPLC article provides a pretty thorough backgrounder.
Several common threads run through these militia groups: conspiracy theories about the federal government; a revolutionary outlook in which members compare themselves to the founding fathers and are particularly fond of the Thomas Jefferson quote "The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants"; stockpiling of arms and ammunition as well as training with them in the expectation of revolutionary violence in the future; nuisance lawsuits against federal, state, and local governments; cranky legal theories based upon misinterpretations of case law and arguments by analogy using common law; constant recourse to the Constitution (or their interpretation of it) with heavy emphasis on the Tenth Amendment (often to the exclusion of nearly every other part).
When I say "revolutionary outlook" I'm referring to a spectrum ranging from belief in and anticipation of a vaguely expected event, without plotting to bring it about, to incitement in which illegal acts are committed as media attention grabbing catalysts to inspire a broader uprising, to methodical planning, robbery and murder. Often, there is an apocalyptic expectation that society and government will collapse, and the revolutionary outlook is one of exploiting this rather than bringing it about or actively plotting insurgency; but revolutionary violence is always bubbling on the back burner, if only notionally.
"Since 9/11, an average of nine American Muslims per year have been involved in an average of six terrorism-related plots against targets in the United States. Most were disrupted, but the 20 plots that were carried out accounted for 50 fatalities over the past 13 and a half years.
"In contrast, right-wing extremists averaged 337 attacks per year in the decade after 9/11, causing a total of 254 fatalities, according to a study by Arie Perliger, a professor at the United States Military Academy’s Combating Terrorism Center. The toll has increased since the study was released in 2012."
http://nytimes.com/2015/06/16/opinion/the-other-terror-threat.html?referer=&_r=0
Timothy McVeigh was at the fringe of the movement. I believe he was tossed out of one militia group for advocating acts of violence that were too extreme by the group's standards.