Sometimes it's environmental. Parents, family, and peers all contribute. I was taught to treat everyone as an equal.
It's hard, when I'm being called "male chauvinist pig," or honky, all the time. It's even harder after all the effort, and pain, I suffered during civil rights marches, and working for women's rights while tying to get the ERA ratified. My views are far less "politically correct," than when I was active in "causes".
I would say it's because of perceived injustice by a set of people that one then makes the mistake of thinking represent the whole. Take someone I work with for example. He is all about anti-Feminism, and is into this MGTOW thing.
His mother was abusive/neglectful, his wife cheated on him, and he is in and out of bad relationships (that he starts on tinder; go figure).
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.