The authors of the book LikeWar: The Weaponization of Social Media discuss what is happening politically around the world, in combat by opposing forces and the social wars that spring up.
It is another example of the erosion of trust. You can't believe what you read on social media, even if it looks like it is coming from what you might have considered a reputable source. As an example, the book cites that the number seven trending social media site the day of our 2016 Presidential Election, reported to be associated with the Tennessee Republican Party, was actually a Russian site being managed by them.
Beware!!
P.S., If you don't know the reference to Memorex, ask someone over the age of 55.