It’s either the experience or it’s just that there is always something dark in some folks which they allow to pop up, or both. I had a friend who is a pretty sensitive person and gave me sage advice before when we were growing up. I have not spoken to him in years as we drifted apart and he emigrated. But on Facebook he is posting far right contents even though he himself is an immigrant and naturalised. Looking back, he may already have that streak in him. Although at the same time, environment and experience may have influenced him which I suspect is due to his father.