Oswald in the doorway: the blog of the Oswald Innocence Campaign, by Ralph Cinque

The point is not that Jackie had a severed arm because obviously she didn't. The point is that: the image was HEAVILY PHOTOSHOPPED. 

And in the case of the woman and the girl in pink, what we are seeing is impossible because that girl was most certainly NOT sitting on that woman's left arm, though she is sitting on something. You can see that she's sitting, but there was nothing there for her to be sitting on. So, that is bogus, and they probably put her in the photo to hide something involving the Secret Service agent standing behind them in the sunglasses. 

I doubt there was anything nefarious going on there. I don't suspect the man was a threat to Kennedy or anyone else. Nevertheless, I deeply resent that they would do this kind of thing to a historical photograph. They have no business changing the content of it in any way. It's evidence, and evidence should never be altered. Nuff said.