According to T. W. Adorno’s authoritarian personality theory, what do prejudiced people do?
Look down on others
If you have an authoritarian personality then you look up to those you see as authority and down upon those you see as lower than yo. This means that you begin to develop stereotypes and can begin to be prejudice and/or discriminate against those you see as below you. This is what happened with many of Hitler's soldiers as they were persecuting the Jews, homosexuals etc.