"There's no "claim" that 47% pay no federal income tax and that a like percentage is on government assistance. These are the official figures (from the IRS and Census Bureau)."
You do realize that "pay no federal income tax" and "get government assistance" are not the same thing, right? I'll take Mr. Romney's word for it that 47% of the population have zero Federal Income Tax liability, but I find it to be an utterly astounding coincidence that the percentage of the population that recieves any sort of governmental assistance is exactly the same! In fact, I do not believe it.
Corporations do not explicitly enjoy all the Rights and Freedoms of Human Beings, but some such Rights (ex Freedom of Speech) are explicitly so granted.