Christians Are Arfraid of Atheists

I did an internet search to see if others had already begun atheist, rational or critical testimony, but all I can find are "ex-atheist" and other conversion testimonies. For some reason this congealed a thought that has been vaguely in my head for a long time: Christians are afraid of atheists. I suppose this should have been obvious, but it hadn't really occurred to me on such basic terms.

It would explain why they react so strongly to atheists. If testimony, faith and coercion are the only tools you have to attract people to and keep them in your religion, then someone using critical thinking to challenge your faith and beliefs must be terrifying.

Perhaps that is why testimony of atheists returning to religion seem to be so popular among Christians.

By the way, the closest thing I found to atheist / rational testimony in my searches so far is this video of Ricky Gervais. It is in the spirit of my rational testimony idea.