What makes a leader a true leader?

What makes a leader a true leader? Many people in our world try to make themselves the ideal leader. There have been cruel leaders and angelic leaders, but even the cruel leaders have made a difference in the world.
When people say cruel leaders many people think of Hitler. He was a powerful leader, who made many people follow him. He was a dictator of Germany. In his ruling, he killed an astounding number of innocent people. In a way, Hitler was a true leader because he was able to connect with a lot of people and make them follow him. Even though he did some bad things, he is still a true leader none the less.
Another leader I think of is Martin Luther King Jr. because he spoke out to everyone and was not afraid of the harsh consequences. Martin Luther made speeches about how he was hoping one day that everyone would be equal and there wouldn't be a border line between whites and blacks. Not everyone agreed with him, but many people agreed and followed him. I think many people can look up to Martin Luther because he was a courageous man. He was a true leader because he believed in blacks and whites being equal and did everything in his power to achieve that goal.
There are many characteristics that can make people true leaders. Hitler and Martin Luther are the people I think of when I hear the words true leader.