I don’t think it is photoshopped. I just think there isn’t a hay bale in that location between the flag and Obama. The red bit on the right side of the flag is just the corner that didn’t get fastened. The flag is clearly supported by a wooden frame.
Why are there two black bars in the blue area where the hay bales should be?
I agree the flag is supported by a wooden frame but is that flag there? When you blow it up the blues don’t really match around the flag and at the bottom some of the hay is red. They may all be facing a flag but that flag looks like it was put there in photoshop. Also notice the red hay around the band on the right hand side of the flag. That band would be about where the last row of red would finish.