With all of the white supremacists, “alt-right” supporters, and neo-Nazis in U.S. government this year, it becomes clearer to U.S. readers that Rowling wrote Snape to be a reformed neo-Nazi who devoted his adult life to renouncing such ideology and remaining undercover so he could help similarly vulnerable students avoid repeating his mistakes.  This group interview, Ex-Neo Nazis Explain What’s Driving the Alt-Right, could have been been about Snape’s mindset as a young man.  It also hints at the effect on Dolores Umbridge when Dumbledore rescued her in the forest and the effect on Voldemort when Harry refused to attack him in the Final Battle.