Max Roser, writing for The Washington Post:
The story that we tell about ourselves is the most important story of all. Journalists and intellectuals who almost exclusively focus on what goes wrong risks us losing our faith in one another, and that faith is the essential foundation without which our ideal of a free and democratic society is impossible. A constant supply of news that make us afraid with little to instill trust in one another and in our institutions has always been the best press demagogues can hope for.
Freedom is impossible without faith in free people, and if we are not aware of our history and produce and demand only the information on what goes wrong, we risk to lose faith in one another.