Their new racial order was that the Aryan race was supreme and a higher race while all other races were inferior. According to Germans, the Aryan race was the most important one but Aryan did not just mean white since there was a distinction between Aryan and Caucasian in general. This is why they killed many other white people like European Jews or Slavs or similar.
The Nazi action that marked it was the decision to execute all Jewish people that were captured by Germans. This involved six million Jewish people who were killed with gas in concentration camps. This started happening when Germany realized that the war was going to be difficult and they wanted to end what they imagined would be a good plan even though it was a monstrosity.
They started sabotaging the war effort or hiding Jewish people and helping them escape or anything similar. A famous person was Oscar Schindler who had a movie made about him who helped Jews in his factories where he protected them from Nazis. He was a German from Czechoslovakia and used his wealth to help the Jews.
