Post-truth people in the media were taught that the concept of truth is obsolete. Postmodernism rules on American campuses today, and a core idea of the postmodernists is that claims to truth are meaningless.
Politics is Crowding Out Culture and Childhood
The realm of practical politics is eminently a realm of conflict, if not hatred. It crowds out culture. It relegates the human things to the last remaining cubicles of privacy, but even these are invaded by social media.