Yes, but the photoshoppers miss the point: the real things the those on the left do by themselves are funnier than anything conservatives think up for them to do.
To my mind, the message the photoshoppers are conveying is "the right says the leftists are stupid". Not really all that compelling a message, especially since those on the left say the same things about the right. Real photos give a much more compelling message: "leftists prove that they really are stupid".