There are some ideas that if seriously considered can leave many people with radical doubts about the nature of reality, which is dangerous to ones functioning

There are some ideas that if seriously considered can leave many people with radical doubts about the nature of reality, which is dangerous to ones functioning as a normally conditioned human in society. You can acquire ideas by reading, thus, writings can be dangerous. Of course, social conformity as the criteria for mental health means that existential texts and socially activist texts are both rightly categorized as hazards to the status quo, meaning that repression of ideas will repress both good and bad writings. Liberation theology is in this way as dangerous an idea as brain in a vat radical skepticism or whatever the hell wittgenstein was on about.