A couple of posts of mine on this topic:
2. Exploiting the poor. I highly recommend this one:
One of my uncles was the manager of a factory in Karachi, Pakistan. On a few occasions, my mother told him to take me there, so that she could have some peace of mind at home. I was 10 at the time.
My uncle took me to the factory, left me with the workers on the ground floor and went to his office. I was fascinated with the workings of the machinery. Various ingredients were mixed in a sealed-off room, then the end result was put in countless tiny cartons with a capacity of 250ml each. Then, the small cartons moved along a metal line of narrow width. Soon, they went into a chamber which miraculously attached straws to the cartons. Sometimes, the chamber missed a few packs. It was my "job" to pick up these neglected cartons and move them back.
The workers were amused by my presence. One of them was a young teenager. He worked side by side with his dad.
"Why do you work here?" I asked.
Here's what I said in the comments there: "If it were possible to legislate higher wages, then we'd have solved the problem of poverty."