There is a fine line, yes, but hopefully you are acknowledging some other things. Without knowing you or the people you visited in developing countries, it might be safe to guess you have more social and human capital on top of actual fiscal wealth. With these forms of wealth comes more power. Also, you said that you'd be more likely to affect the world in a greater way. More likely, yes. And we in the US have much larger carbon footprints than people in developing countries. So, in comparison to people in developing countries, you have more power to better AND pollute than they do. This doesn't make you better, or a racist, it but it does makes you more resonsible for what happens on this planet in the larger scheme of things.
If you are frustrated or feeling emotional about something, that's where there is something to learn. What is upsetting you? Don't tell me or Sam. THINK about it. Really get to the heart about what you think and WHY you think it. The posts are to think about and digest what you are learning. You don't have to agree with Sam, but at least formulate an opinion why. Just thinking that something is retarded isn't enough.
And by the way, you are needlessly hurting many people when you choose that word. It's a free country, yeah, but you are free to choose less attacking language too.