(...sorry about the foul language!)
Good movie, this scene is a great illustration as to how the consent of the willfully ignorant majority is the power that enables a fundamentally unjust system to perpetuate itself. We live in a world where "two-thirds of the world is starving to death, while the other third argue about sex;" we are the top of the food chain, and our cultural prestige is maintained by the efforts of those at the bottom.
Sure, we don't do it intentionally, sure we don't see the injustice. ...but intuitively we know. Our whole system is fundamentally unjust but we try to maintain the status quo by shunning those who question it. We keep our hands over our eyes, and our fingers in our ears, and we get mad at those who try to pull our hands away. We talk about 'individual responsibility' while we shop for sweat-shop-manufactured-goods. We deify 'personal property rights' in an era with the highest rate of slavery in world history. We talk about 'social mobility' when the American poor grow up in the midst of violent neighborhoods, sub-standard medical care, twinkies and doritos for dinner 5 nights a week, and illiterate parents.
"From everyone who has been given much, much will be demanded; and from the one who has been entrusted with much, much more will be asked."
Rabbi Yeshua bin Yusef
(tortured to death in Palestine for threatening the status quo)
"When I feed the poor they call me a saint, when I ask, 'Why are they poor?' they call me a communist."
(assasinated in El Salvador for speaking out on behalf of the oppressed)