Hmmm. The boot is nice because it brings to mind that Orwell quote "If you want a picture of the future, imagine a boot stamping on a human face— forever." But I like the eagle as well because an eagle supposedly represents the United States as a whole but is generally used to represent only its government. Having it attack the "Don't tread on me" snake makes that dichotomy clear. So I'm going to go with that one, though I wish it had some color in it like the other two do. Could the snake be green and black?