Who was Adolf Hitler? He was the leader of Germany that believed that he was cleansing the society of Germany of all Jews, homosexuals, the handicapped population, gypsies, artists, Catholics, Slavs, Poles, and anyone who opposed his views. Basically, it was everyone that didn't represent the aryan population (picture shown above). Although it was Hitler behind the ideas of "cleansing", he left the execution of his plans with Heinrich Himmler and Reinhard Heydich. Both of these men were behind the various ways in killing over 5.5 million people.