THE ONES WHO WALK AWAY FROM OMELAS

In THE ONES WHO WALK AWAY FROM OMELAS, the people of the utopian city know that they owe their happiness to the suffering of one child, and many of them decide that it is worth their own happiness to continue exploiting that child.
How does this parallel the way wealthier countries exploit less wealthy countries?
( it does not have enough space to write the topic, so i keep write the topic to description) And, this is required Argument essay.