Change the question on the bottom and you may have a shirt that some atheists/skeptics, who know nothing nor care diddly about JWs, may buy. You may have rework the whole thing to incorporate Fundamentalist Christian symbolism.
You might even want to consider designing it exclusively to spoof Fundamentalists. JWs will still pick up on the phrase Theocratic Warfare, in spite of any crosses, etc. That will piss them off since they would interpret it as an encroachment on their language and "culture."
If you were to redesign it as a Fundie thing you may want to consider putting Jesus' face, with army helmet, instead of the skull. It would catch more attention.
VILLABOLO