You should read [link|http://www.amazon.com/God-Delusion-Richard-Dawkins/dp/0618680004/|Dawkin's latest book], if you haven't already. Atheists are a tiny minority in much of the world. While it's true that determined minorities are usually the ones that change the world, it's a very tough process.
His [link|http://richarddawkins.net/home|blog] is pretty good too.
I think that it's more likely that atheists will be banned from aircraft than theists will.
Cheers,
Scott.