I call fake.
The image of John Kerry's head from the picture in question was used in an earlier photoshop by Registered. I'm pretty sure that if Registered had a photo of John Kerry on the same stage as Jane Fonda that was a clipping from a newspaper (as the photo in question seemed to be) he would have posted the entire photo a lot earlier.
In addition, Registered was not very forthcoming in answering whether the photo was a fake. He said, "I don't know" or something like that. He does know - he just didn't want to answer or thought it was funny or something.
Then he changed the photo at the link supplied to his previously posted photoshop.
Additionally, the sun is hitting John Kerry on his right side and Jane Fonda on her left side. My guess is that Jane Fonda was photoshopped into the original B/W picture and the headline and text was added to make it appear to be a legitimate scan of a newspaper clipping.
That would be fine if there had been some indication that the photo was fake. Simply having Registered's trademark on the pic would have done it for many.