It's not that hard to understand if you try and put yourself in their shoes and don't assume they are "disgusting, stupid, and small-minded". You aren't any different than them in your judgement of other societies, you just happen to have a potential advantage in education. What is your excuse for such derision?
You act like these people are animals and you aren't ever going to reach them and you are going to exacerbate the same impact you are talking about. Do you have the same view of all poor people embedded in a national culture?