Almost right.
One who is a danger to the government and the populace.
Bingo!
You make the point that it is a term with many definitions and obumbler can make it mean anything he wants.
And never forget Napolitano’s infamous list of potential terrorists; veterans, TEA party members, etc.
I suspect posters on FR can be found on a list as well.
We’ll be “progressing” to hit squads on drone operators and their killer bosses and their families. Not to mention a mess of downed drones.
The Government killing Americans on US soil outside the judical system and sentence of death, is war. The killers and their handlers become soldiers in that war. Wouldn’t the Marxists just love that.