Not hiring people only for personal views they hold is just a weirs bar to set. Judge people by their fit for the role and their actions. Attempting to both uncover and judge a person's beliefs is a losing battle at best.
It is not a weird bar at all when the "personal view" here is being a Nazi. The action of believing in Nazism is actually a disbarring for any role of trust, integrity, or value in our society.
Being a Nazi is not a protected status (yet) and you should expect to be fired immediately if you espoused those views anywhere, at all.
"How many people in the office do you view as vile subhumans who should be purged from the world because of how they were born?"