I'm not finding the photo on Google search, but searching photos is tougher than searching text. It doesn't appear photoshopped to me, but scaling for the web introduces it's own artifacts and hides photoshopping. The signs clearly put the location as the current demonstration, and makes it far less likely this is an old demonstration photo being passed off as a new one.
My gut tells me it's legit, but I'd still like to get info on who took it, or at least a camera EXIF to prove it hasn't been shopped.
I think if any part of it was altered, it’d be the sign, but given that there’s also a “cheesehead nurses” sign close by, there’s probably a group of health care providers that came together.
If the resolution is high enough, ya just might be able to read the names on her pads!