Facebook and companies like it will in the long run harm more than just democracy. See https://www.theguardian.com/technology/2014/jun/30/facebook-emotion-study

Facebook and companies like it will in the long run harm more than just democracy. See https://www.theguardian.com/technology/2014/jun/30/facebook-emotion-study-breached-ethical-guidelines-researchers-say https://www.theguardian.com/technology/2014/jun/30/facebook-....