I always thought that song was about atheism taking over and destroying America. Atheism is a euphism for the anti-Christ because atheism/unbelief is anti belief = the anti Christian attitude.
In other words it is about the anti-Christ take over of America - in ideology at this point vs. the actual person of satan.
The song always creeped me out because I found it prophetic - or should I say anti prophetic because prophets interpret God/ anti-prophets interpret the anti-God.
Same here.