Germany's one-time Führer and arguably the most ruthless dictator the world has ever seen, Adolf Hitler, was born on this day, April 20, in the year 1889. Even 131 years after his birth, the man who ordered the execution of around 5.5 million European Jews, continues to evoke horror across the globe. He was the force which drove the world into the Second World War, an event that claimed the lives of nearly 60 million civilians and soldiers.