Fake news is not news you disagree with.
"Fake news" is "fabricated information that mimics news media content in form but not in organizational process or intent. Fake-news outlets, in turn, lack the news media's editorial norms and processes for ensuring the accuracy and credibility of information. Fake news overlaps with other information disorders, such as misinformation (false or misleading information) and disinformation (false information that is purposely spread to deceive people)." [David M. J. Lazer, et al., "The Science of Fake News," Science 09 Mar 2018: Vol. 359, Issue 6380, pp. 1094-1096.].