I dislike Apple, quite a lot, but you have to be fair, Foxconn is an independent company, and certainly more closely associated with Intel than with Apple. It was Intel's huge contracts that made them as big as they are, and enabled them to get to other customers such as Apple.
Regardless, It's an industry wide issue. In order to compete in the real world, you have to manufacture in China, It's not just Apple doing it:
Here are more Foxconn customers:
Acer Inc. (Taiwan)[36]
Amazon.com (United States)[37]
Apple Inc. (United States)[38]
Cisco (United States)[39]
Dell (United States)[40]
Hewlett-Packard (United States)[41]
Intel (United States)[42]
Microsoft (United States)[43]
Motorola Mobility (United States)[40]
Nintendo (Japan)[44]
Nokia (Finland)[38]
Samsung Electronics (South Korea)[45]
Sony (Japan)[46]
Toshiba (Japan) [47]
Vizio (United States)[48]
Truth is Foxconn manufactures reasonably good quality products (certainly way above average for China) and they do so incredibly cheap. That changed the industry, and it will continue to attract huge companies.
We are all responsible: The Chinese government is the main abuser of its citizens, and wants a bigger industry, so they'll allow Foxconn to do anything they want. Most corporations are big amoral entities, and so are most governments (I don't mean this as an insult, I'm not saying they are evil or good, I'm saying they are neutral, they'll do what it takes to bring in profit, regardless of the implications). The other involved party, and the only ethical one, are the customers, the general public, and they completely lack morals too. Most members of the general public, as well as most employees at any of this huge corporations, and most functionaries in any government are ethical human beings, capable of feeling empathy and understanding right from wrong. But as a whole, as entities, they behave according to a completely different set of rules, and ethics and empathy aren't in their instruction set. So it's up to the individual to change this situation.
If you are really pissed about it, stop working for them, stop voting for them, and stop buying from them. Complaining about it on the internet or pretending that any of this institutions, customers included, act as a whole will get you nowhere.