You're missing the first step.
The first step was the controlling patriarchal culture of parenting in German families.
The Father ruled over all. Women and children had no power, no say.
Massive Volumes have been researched and written in the field of psychology on "how could a Hitler happen, and how could he take a whole society with him?"
It's been 20+ years since I studied this stuff closely, but in a nutshell here is what happened: You had a culture where the father ruled over all. You had generations of children with sub-conscious pent up anger and rage, add a victim to direct that at...and there you have it.
Yes, Jews have been persecuted for a long long time. Lot's of Jewish culture highly valued education, advanced degrees, and financial security.
German's were a said to be angry as a society for how they were treated after WW1.
To go even further, the history of "civilization" is essentially man "evolving" from one world conqueror to another.
Humans are animals. Animals who can think and talk and plot to control and kill other animals, including other human animals.
Humans contain the ability to, as a group, hate another group of humans (tribal warfare), and that is essentially what humans do.
Today, a lot of that war fare is economic. Cases can be made that the Chinese and the Germans are trying to take over the world / huge pieces of it, economically.
While you are busy being divided between blue states and red states, China has been arranging to own the world resources for the next 100 years / forever.
Check out what they are doing in Africa...