I bring it up because this forum is the only place I go where I might get a variety of responses and I am genuinely interested (and not trolling, well not yet

It's a documentary about an evangelical kids' summer camp in dakota run by a woman called Becky Fischer.
Lots of prayer, singing, speaking in tongues, etc etc. And that's fine. But a few things about this film were scary:
These kids are being indoctrinated. Thereis no other word for it. At the start, this woman talks about the enemy ('muslims') training their kids from the age of 5, and how america has to respond by, er, doing likewise. 'And i'm sorry, but we have the truth,' says Ms Fischer.
These are young kids, utterly impressionable. One 9-year old girl keeps parotting her parents/preachers in a very worrying way. Many are homeschooled by parents with a very shaky grasp of science, to say the least.
I guess my point is: I can understand why parents want to bring their children up in the faith to which they beling, but at what point do you allow children to make their own minds up? is keeping them shut off from the outside world and its influences fair to these kids? If they have 'the truth', what are these people so scared of?
It seems to me to be cruel, in a way, but then i don't believe in god.
PS Ted Haggard makes an appearance, telling his congregations that homosexuality is wrong. Which was a bit of light relief.