Comment by hnhg

You mention an event in 1932. Aren't you forgetting that several years later, millions of people were wiped out systematically and there were reports of it coming back and they were largely ignored. We have greater than ever communication of the world's problems and without the benefit of hindsight, it's impossible to tell if that's had any positive effect.

EDIT: it also sounds to me like you're conflating our media with our ability to self-reflect and learn as a society. That might not be the case