Who was Martin Luther King and What did he do?
But if you mean Martin Luther, then that is a different story. Martin Luther was once a priest in the catholic church. But he began to question things that went on in the church, about the church leaders and customs. He then wrote a long list of things they need to fix about the church and nailed it to the door of the church. He was persecuted later for this action but he was never killed because there were many that thought he was right and they protected him.