Nearly a hundred years ago, bankers were blamed for causing the great depression and hyper-inflation in Germany. Many of these bankers were Jewish. In the shadows, plans were made during this opportunity, to grab power and for German social justice to target Jews for collective punishment.
First, a propaganda machine had to convince the public. Second German youth needed to be indoctrinated. Third, highly emotional and powerful speeches about the absurd belief in duty and the greater good incited the mobs to demand social justice. And finally a well trained collective of SJWs carried out the sentence.