Facebook is harming our democracy, and Mark Zuckerberg needs to do something about it - Vox

Facebook makes billions of editorial decisions every day. And often they are bad editorial decisions — steering people to sensational, one-sided, or just plain inaccurate stories. The fact that these decisions are being made by algorithms rather than human editors doesn’t make Facebook any less responsible for the harmful effect on its users and the broader society...
Humans decide what data goes into it, what it can do with that data, and what they want to come out the other end. When the algorithm errs, humans are to blame...
as a way of choosing the news stories people read. Essentially, Facebook is using the same criteria as a supermarket tabloid: giving people the most attention-grabbing headlines without worrying about whether articles are fair, accurate, or important... sensationalism attracts clicks. Fairness and accuracy doesn’t... helps to explain why the 2016 election has taken on such an apocalyptic tone.