"Apple has always dismissed allegations of human rights violations with the argument that it's basically not their direct responsibility and that it's their suppliers' duty to adher to their supplier code of conduct"

Wrong: http://www.apple.com/supplierresponsibility/

Apple actively monitors their suppliers to ensure compliance with their code conduct, and if violations are found they make the supplier fix them, compensate the workers for the abuse, and in some cases have dropped the supplier if they thought it wasn't acting fast enough or sincerely enough.