America and Counterinsurgency II

Piggybacking off the last post, I wonder if it is as sobering to others, as it is to me, that the U.S. having waged (and paid for) counterinsurgency campaigns in Iraq and Afghanistan, is now paying for a burgeoning counterinsurgency in it's own country.
I am not the self-righteous type (at least I try not to be), but if you accept the premise that there is an active counterinsurgency campaign in America, it begs another question: What is the purpose?
In the Afghanistan and Iraq counterinsurgenc...