This is an interesting video about Dietrich Bonhoeffer’s Theory of Stupidity. He argues that stupid people are more dangerous than evil people, because you can’t reason with stupid people.
He’s using “stupid” more along the lines of indoctrinated (I wonder if there’s a translation issue), and the whole argument reminds me of the saying “you have to be educated to be this stupid.” (“Educated” in this case meaning a false education that indoctrinates.)