I assure you, many of us can comprehend it for the simple reason that our parents immigrated here from exactly those places. We are quite aware of where we have landed in this world.Greed and selfishness are terrible things. There are millions of people who have lost their jobs, businesses, not to mention the 4 billion people in the world who are living on just $ 3.00/ day. Think about that for a second if you can, most Americans living in the middle class can't even comprehend that.
I may or may or may not use my relative wealth to help those people build self-sustaining first world economies. You'll never find out, as donations should be anonymous to be valuable. Broadcasting your donations mean they are no longer charity, they are merely social signalling.
Speaking of social signalling, enough with the "shame" (your words) and emotional appeals. We are people of reason and intelligence here. We're willing to have a rational discussion about how we can each use our enormous (from a global perspective) wealth most effectively, but the shaming and emotional appeals are an insult to our intelligence, and not worth engaging with.