I fully realise that this is going to be a tough sell, but before I start, take five minutes to read this.
Now think about the farmers' kids in that scenario. They're not going to school, they're not facebooking on their iPhone, they're not taking meow-meow. They're fucking agricultural slaves.
They're not badly-paid agricultural workers, they're agricultural slaves. And if they weren't useful on the farm, or there was a bad year, they'd be sold into prostitution.
By comparison, a tough life in a factory is like a holiday. It's still a shit life, and it's not one I'd wish for my child or, indeed, anyone. But those kids are the generation or generations that have to carry that pain so that their kids will be able to go to school and facebook on their iPhones and take meow-meow.
They're still better off than they would have been on the farm. They're not slaves any more. They're not being sold into prostitution. Their desperate poverty is actually more comfortable to them than their previous agrarian lifestyle.
As painful as it may be for bleeding hearts to deal with this, there's nothing that you can realistically do for them but treasure the fact that their gradually improving lives will lead to a revolution for their children.
Ideals, aspirations, rhetoric - none of these count for shit when it comes to picking a society up by its bootstraps. If there's nothing there, the wealth has to be created. It gets created sheer bloody hard physical work. And much like those kids are there to work the farm for the survival of the family, the reality of it is that they're there to work in the sweatshop for the (slightly better) survival of the family, too.
Oh, and a corollary to this: if you want those kids to get out of the sweatshops more quickly, spend your efforts getting free trade implemented with these poorer nations. Our protectionist policies like import tariffs, the CAP and so forth just drag out the time those kids are stuck in the sweatshop.
The faster we can buy stuff from them and the more of the money that goes to them, the better off both parties are: we get stuff slightly cheaper and they get a bigger market. And the faster they get their wealth, the faster they'll be able to afford schools and the faster those kids will get out of the factories and into lifestyles more like ours.