A very important TedTalk on the threats and consequences of the artificial intelligence on the world: DeepFakes
https://www.ted.com/talks/danielle_citron_how_deepfakes_undermine_truth_and_threaten_democracy
The consequences of Fake News are epitomized by the real news of the collected stories popularly know as "Pizzagate." It became national headlines when the fake news story inspired a man, in Dcember 2016, to attack a pizza restaurant with an assault rifle, based on a complete lie.
Biased news sources are now common. The reporting is not made-up news, but it is reported in a way that serves a political ideology.
Although recently archived, this feature from the Wall Street Journal, is a good example of the difference in messages between conservative and liberal news coverage:
http://graphics.wsj.com/blue-feed-red-feed/#/president-trump