Josef Mengele

A German Schutzstaffel (SS) officer and a physician in the Auschwitz Concentration Camp. In charge of the selection process (where Jews were either selected to die or live to work), performing unscientific deathly human experiments. At the same time Mengele wanted to prove that Jews were an inferior and dangerous race. Experiments were primarily for genetic research on how twins came to be, heterochromia iridum (eyes of two different colors), dwarfs and people with physical abnormalities. Did experiments on the prisoner, not caring for their health or safety.

Confirmation Bias
Jose Mengele, falls into Confirmation Bias because he intendedly wanted to prove that all the Jews were an inferior and dangerous race to the world. Simultaneously, Mengele continues with his own research about twins and heterochromia iridum and etc., finding out that there really was no way to prove how a race can be inferior or dangerous through his "scientific" experiments.