The Holocaust happened.
Which means Mass Insanity is a real thing. Not just short term Mass Hysteria, like with the 1938 radio broadcast “War of the Worlds”, but long term sustained Mass Insanity.
When dealing with Mass Insanity, when the rational are grossly outnumbered by the irrational, we must allow ourselves to appear crazy in the short term, with the faith that our actions and reactions will be seen over time as being consistent and reasonable in the face of insanity.