You do not credit the blood thirst of Obama's circle. These people are ideologues and Communists. They're middle-class armchair executioners who seriously want Middle America to Go Away (the 25,000,000 remark, which has been bid up in the meantime to God knows how many).
Middle-class Communists are the worst, the most bloody-minded. Check your hole card; it might not be worth as much as you think.
NB, have you been following this thread?
I understand your point, and as far as assessing motivations, I think you're spot on.
Still, they are constrained by political and operational realities. Like any other threat, they're not free to operate without consequences. As we used to say, "The enemy always gets a vote in your plan."
In a different world, where Obama and company were free to act without possibility of repercussion or failure, that would be one thing. This is not the case. In particular, the left has a major advantage and a major disadvantage. Their advantage is their reliable special interest voting blocks form a massive constituency that will politically back anything, and I fear that to be *anything*, that is done to keep their checks flowing. The disadvantage is that these loyal elements on the left are not soldiers, and cannot be mobilized. At best, they can be incited to protest locally or to attack their own neighborhoods.
That means that the left needs (a) and army, and (b) a context to use the army. The context being the more important of the two, because we have plenty of armies lying around. The context is what will allow the left to marshal the rank and file of the center-right security apparatus of the U.S. (law enforcement, military, national intelligence) against the far right (patriots, TEA party, Constitutionalists) that are their enemies.
The left has to turn the center-right against the far-right because the left has no army and no way to get one. All they have are dependent masses that will not question them or leave their side. That's a mighty advantage in most cases, but when push comes to shove, throngs of street protestors mean somewhat less than organized troops. The left needs force to back it's intentions up, and that force does not come without complications.
That's exactly why this scenario was written as DHS (center-to-center right) versus the TEA Party/Klan/terrorists (ostensibly the extreme right). The scenario's narrative is crucial because let them split the country along lines favorable to the fight they want to have. It's laughably inept, though, unless anyone out there is aware of a nascent neo-Confederate insurgency rising from the TEA Party that I'm presently unaware of. Sadly, the left may believe this twisted fantasy. This is the stuff that epic miscalculations are made of.
So, despite what our friends on the left would do if they could wave a wand and have their way, down here on earth, they have to play the cards they were dealt. Don't lose sight of the fact that any card they play can and will be countered.