Personally, I think it's ridiculous when people say that people in Africa starve because of us.
People say that the only way we can afford to live as well as we do is because of poor children in Africa. This is utter garbage. Barely anything, other than a bit of oil, is exported out of Africa. There are starving children in Africa mainly because the continent is a jumbled mess of civil wars and religious terrorism.
Sure there are children in India/China/etc. working to make our shoes, but that's not our fault.