The Ammon Bundy "Militia" clearly relates to the FBI's definition of Domestic Terrorism; and they should be charged to as well as referred to as such.
"Domestic terrorism" means activities with the following three characteristics:
Involve acts dangerous to human life that violate federal or state law;
Appear intended (i) to intimidate or coerce a civilian population; (ii) to influence the policy of a government by intimidation or coercion; or (iii) to affect the conduct of a government by mass destruction, assassination. or kidnapping; and
Occur primarily within the territorial jurisdiction of the U.S.
All 3 of these are occurring, they have stated numerous times that they would do what it would take in order to prevent being shut down.