My old man was on a trip just out of high school in Europe, and was in a youth hostel in Germany. He asked one of the Germans about this guy he had heard about. Hitler. The German looked around and whispered “not now”.
Four or five years later dad was in the war.
Talk about “normalcy bias”. Even back then. Dad, an American kid, from a middle-class family with enough funds to send him on a trip to Europe, visit relatives, etc. His main concern was college in the Fall.
A few years later he is fighting against enemies willing to wipe his relatives out.
One of the reasons I like Donald Trump Jr. is that he spent time with his grandmother who had first hand experience with a Communist regime. She taught him well .