I actually watched all four parts of that documentary. I've wanted to see it, but I could never find it anywhere. Thanks to Swantz for posting it.
That being said, most of what they put in that video is really quite disturbing. The minister speaks about how (some) children in the Middle East are taught in school that it is acceptable to kill Americans or that the US is the "Great Satan." She then goes on to elaborate on how Christianity is a religion of peace. Yet further on, she states that each of those children is a member of the "Army of God." There is even a part where she tells them that she would be "Honored if they laid down their lives for God," or some similar statement. Excuse me, but these are kids! They aren't soldiers. Basically, she states that the religious war brainwashing that occurs in the Middle East is evil, yet proceeds to carry out that same policy on these kids.
But the thing is, they're just kids! They shouldn't be preparing to go to war to defend their beliefs. They should be running around and playing tag or pretending that their backyard slide is a spaceship to another galaxy. These kids should be left to form their opinions and beliefs about the world, not have some canned and packaged indoctrination crammed down their throats.
Second, the trick with the water was particularly nasty. It is really a method by which she can separate the "true believers" from the "hypocrites" in front of everyone. By having these supposed "hypocrites" confess their "sins" in front of everyone, these kids are damaging their self-image. The minister then sets herself up as the only person who can "save" them and rebuild their self-image. The result is the creation of an individual who is even more intensely fanatical than those who follow her willingly.
In effect, she really is building an "Army of God."