It's the same way with the WorldVision ads, they choose the most heart crunching stories, photos and videos, so people can give money.
They know 'good hearted' people will feel compeled to help, I hate them when they use "emotional blackmail".
Back in the 1980's me and my sisters would wake up at 4am to watch cartoons on what is now Univisión (SIN back then, the only channel was an East feed, which explains the hour =p), and after a couple of hours they would air a 30min or a 1hr WorldVision add, no doubt after watching it, they would get very depressed because the kids were very very poor, and the guys from the show would be on the streets of poor countries, giving away pieces of bread to starving kids who would quickly devour it; it was more an opportunity for them to showoff than to show how they were helping.
Not so many years ago in México, an association pro-adoption of pets (from the local dog pounds), aired on the morning shows videos of how the poor dogs were killed, so people would feel compeled to go and adopt the pets. It was shocking because they would show you for a couple of minutes a cute dog in a cage, cut to another video and it was being executed 'pain-free' with a big shock of electricity, very disturbing.