An odd line of attack on Jimmy Carter

An Iranian Web site called the Islamic Revolution Document Center just released some new photos from the 1979 seizure of the U.S. Embassy in Tehran. Check out this mysterious image, which appears to be some kind of evil Fraggle meant to represent former U.S. President Jimmy Carter:

It's hard to imagine today, but back then, Carter was pretty much the bête noire of the Islamic world. I suppose the Fraggle puppet could also be a reference to the infamous killer bunny story, but it seems odd that the president himself would be represented as some kind of mutant rabbit.