My parents have gone off the deep end

[Crunchy]

First off, sorry to hear about all this. It's going to make your life difficult having parents caught up in this type of conspiracy cult and I wish you the best in dealing with this.

Second, I've written about the prevalence of this before and I don't think people see it as wide spread as I do but I will say it again. The information age has not led to any greater understanding but instead has led to an epidemic of confirmation bias that is very widespread. While liberals fall for some of it, conservatives have been netted in disturbingly large numbers by conspiracy nutters. 

People like that crazy pastor and the insane Alex Jones are now able to broadcast their nonsense to the universe. People like your parents are being manipulated in large numbers. The right wing media has taken conspiracy theories and politicized then purely for the purpose of winning elections and it has worked. 
http://mediamatters.org/research/2016/06...ign/210847


20 years ago Alex Jones was and his ilk were kooks to be laughed at. Today, the president and a great many of his followers get their information from these kooks just like your parents do.
Rationally speaking, this is frightening.

[Cecelia]

There's a disturbing number of people who agree with the likes of violent thugs like Steven Anderson, but will only say so when they feel safe. The likes of him and Alex Jones spread their propaganda, and those who are receptive to it will eat it up. I'm sorry to hear that your parents have been receptive to it.

[Minimalist]

Invest in Tin Foil futures.

[Athene]

If you tell them you're an atheist, they may simply disown you. But, there's a also decent chance that they'll take it upon themselves to "purify" you...via pain, torture, captivity, starvation, etc. You get the drift. Whatever it takes to prevent you from becoming "lost".

Depends on how much they love you, I guess.

Good luck!

[Mister Agenda]

I guess there's always someone who's parents are more far gone than your own....

[J a c k]

I say don't tell them. Noooo. Careful. Also, try to keep away. If they know you're atheist, what your mom did is pretty darn scary.