The biggest obstacle that I see facing any resistance movement in this day and age, is the ability of the media to completely control the minds of the masses with the media. Any reistance is going to be instantly labeled as "terrorism" and you'll see 24x7 broadcasts beating it into people's skulls that any assistance will make them the same.
One other factor that would have to be fought is the fact that most americans blindly worship the law, no matter how stupid it is.
Your analysis compares the USA to a say, Nazi Germany.
American’s are somewhat different in make-up however as our cultural heritage and how we got into economic malaise is different then the Germans of 1900-1938. The middle class taxpayer will be squeezed into oblivion over the next four years while it was the wealthy the Germans went after.
Historically, middle class begins revolutions, either voter or physical, because they are the most visible to be taxed by a failing economic State. The Nazis chose the Jews whom many ran the banking system and confiscated wealth.
The USA doesn’t necessarily need a boogeyman to confiscate property for a failed economic State. Greedy politicians in the USA supported greedy iBanks and Central Bankers. The middle class will have property confiscated by the Gov/Banking system combo. When the truth of the injustice behind it all becomes known (the Internet is not so easily muted) then the middle class will revolt either at the voting booth or physically. Nazi’s had manufacturing. The USA has offshored this wealth overseas. Some differences...
I’ll give you a personal example. My car payment for a decent convertable was 13 days late when I went on vacation and simply forgot about it. The bank sent me a certified letter stating I owed XXX, the 13 days late payment and the next payment not due until August 22nd! They can reposess the vehicle legally and despite being a solid customer for 8 years took the time to sent a certified letter. Housing is no different. The failed economic policies of the State are both the originator and the antagonist. It always ends one of three ways.