Banned for starting without fame.

Banned for flaming on.

Banned because phlegm is your friend, you bilious boy.

Banned for failure to appreciate first-line immune responses. That gunk is pushing hostiles outside the perimeter, and civilized folks know to keep their fomites properly contained, even if they don't know the word fomite.

banned for it has sociological applications as well.

Si vis pacem, para bellum

banned for mentioning a fantastic piece of literature that was torn apart by its movie adaptation

banned for that goes to show that you can't make everyone happy

banned for that is not always the case

Gore had 51%of the people fooled but Bush had more the 50% of the electoral college fooled.

Banned for who is "Obama"

Banned for what is the "U.S."?

banned for implying the existance of a god and the ability to become one

Banned because there's not enough detail about the civilian world in the book to make a call like that. 

The political class are all retired military, and none of them are characters in the book. It's accurate, though, to say that the book expresses contempt for mass-franchise democracy. And the imagined culture is pretty hardcore with physical punishment of criminals, but that's a possibility for any democracy that doesn't have a constitution specifically limiting that sort of thing.

Heinlein probably would have liked the fact that the M.I. in the movie was co-ed, but mostly I'm glad he was dead before they made that thing.