"Parental expectations are far more powerful."

AHA! you have hit the nail on the head. Now how do the rich keep the parents of the poor from having high expectations for their children?

And if Politicians can remove roadblocks and relieve the situation, why haven't they done so? Listen to Bill Cosby. He was so poor he didn't even know how poor he was. What roadblocks were in his way? Who held him back and took all his opportunities away?