Its like there is a hair trigger set up in their mind that triggers mind shutters on the slightest thing that doesn't sound right to them.
I know back in the day if i came across something apostate (normal free thought stuff Now cause i know) i could sniff it a mile away.You know the taste of your Kool-aid and cant be tricked by another type.
The way to them is from the inside out, they are a religion of followers of an Organization and cannot free think for themselves(mostly) but need to see irefutable evidence ie UN scandle from the UN and Newspapers to question the actions of this org they have invested their life in.
as exwhyzee says tread very, very lightly or else the shutters come up!