http://www.youtube.com/watch?v=w4fQA9mt-Mg

Yea yea it's a can of worms. But it's a good video with 2 simple messages.

1) Keep your religion to yourself.
2) Seperation of chuch and state means keep religion out of government.

I don't mean this to be a religion bashing or to actually open that can of worms... but I think it's a good explination as to why some people just can't let it go.