The NDAA was signed by President Obama while you were not paying attention. It allows for indefinite detention of American citizens. Ostensibly, the purpose is to "stop Al Quaida" of the home-grown variety, but there is nothing to prevent them from using this against Occupy Wall Street Protesters, or even those who voiced sympathy or support for them.
Now, I did not think much of the OWS rabble, however, it is their right under God and the Constitution to have their voices heard. Consider a scenario where they turn up and actually threaten to bring justice to the the guilty fraudsters (Yeah you Goldman Sachs - scum of the earth and plague of the century) - since they own Washington and the President, can you not imagine that they might want the leaders declared terrorists and locked away? I can.
In fact, If I were president, I might just do it without any nudging from Goldman Sachs. I wouldn't stop there, either. Bill Ayers, his ugly, murderous, wife Bernadine Dohrn, Nancy Pelosi, and many, many, more would quickly be declared terrorists by a Retro Housewife presidency. I would lock'em up and throw away the key.
Luckily for them, and ultimately for me and my big mouth, our Constitution prevents this...but now it doesn't.
That should scare the hell out of you, whatever your political stripes are. Capice?