There are millions in America - soldiers, retired military, LEO, active & retired, that ALL took an oath to protect and defend the Constitution against enemies both foreign and domestic. Well, there has been a domestic terrorist in the White House for a full 6 years now, and not a one has done a thing about it. Why, all of a sudden, would they suddenly snap to and start living up to their oaths? They've not done so thus far.
Simple, the ability to organize. The walls have ears and before any movement could begin to congeal, it would be set upon by Kool-Aid drinking, black suited operatives.