It's not a Photoshop.
The photographer, Jamie Sabau of Getty Images, has testified that he saw the man inside the Romney campaign event in Lancaster, Ohio on 12 October 2012. Jodi Einhorn of Getty has confirmed that the image has not been altered in any way.
I appreciate that your Republican inclination is to deal with reality by denying that it is real. There is no global climate change, evolution is a centuries-old conspiracy of the world's biologists, gay marriage would destroy straight marriage, etc.. But, the rest of us depend on facts.
http://www.buzzfeed.com/andrewkaczynski/man-at-romney-rally-in-ohio-wears-shirt-put-the-w