Neil Postman is, in my estimation, one of the most important writers whose work needs to be more actively read, studied, and taught than it is currently. While his work is not obscure, and has had some influence, I open this short essay by asserting its significance because Postman has articulated and explained the fundamental necessity of deconstructing, understanding, and moderating the influence and effects of our media on ourselves (and by extension our culture, our collective behavior and decisions) better and more accessibly than any other writer I've found.
Also, for me, through much of his work as a whole Postman implicitly draws out the evolution of a primary thesis of communication studies--the medium is the message--into our growth and experience of hyperreality (which is vastly accelerated by the internet). I think that this process has continued, and that--because our experience of hyperreality is so pervasive and so convincing--we are now actively trying to make reality match our own subjective notions of what it should be, and the phenomenon of Donald Trump as PEOTUS is as clear an example of this large-scale reification of hyperreality as I've seen.
Look: I know that those previous two sentences are maybe not the clearest I've ever written, and that this can seem dense and obscure and not really worth thinking about too much. But, and I urge you to find me persuasive on this, it really is important and actually not too complicated, if you can stay in a conceptual space for a bit. I think it's urgent that we see and understand this set of phenomena we're currently experiencing, to help explain a world where "President Trump" is not a joke in a Simpsons episode from 2000, and to inform how we react and act going forward.