Regardless, it was still designed to mislead. As Moore himself admitted in his little rant, the bank was a licensed firearm dealer. What he did was absolutely no different from going into a gun shop and buying a weapon. But of course if he had filmed that, it wouldn't have raised any eyebrows. He was simply trying to distract people into believing that the bank was engaging in reckless policies, by playing up the fact that he was in an unusual location. So in that sense, it was staged.
I know the bank piece had a slant, but I can't bring it up to the level of outright lies and misrepresentations elsewhere in the film.