Fake news is not new

Thou shall not bear false witness  Exodus circa 1500 BC

Why would there be a commandment against this activity unless it were a problem?

If you remove from your midst oppression,
false accusation and malicious speech;
If you bestow your bread on the hungry
and satisfy the afflicted;
Then light shall rise for you in the darkness...  Isaiah circa 800 BC

Still a problem seven hundred years later

...ships: even though they are so large and driven by fierce winds, they are steered by a very small rudder wherever the pilot’s inclination wishes. In the same way the tongue is a small member and yet has great pretensions. 

Consider how small a fire can set a huge forest ablaze. The tongue is also a fire. It exists among our members as a world of malice, defiling the whole body and setting the entire course of our lives on fire, itself set on fire by Gehenna.  

For every kind of beast and bird, of reptile and sea creature, can be tamed and has been tamed by the human species, but no human being can tame the tongue. It is a restless evil, full of deadly poison. With it we bless the Lord and Father, and with it we curse human beings who are made in the likeness of God. From the same mouth come blessing and cursing. This need not be so, my brothers. Does a spring gush forth from the same opening both pure and brackish water?  James circa 100 AD

Still a problem after Christ.

My guess is that "Fake News" is part of the human condition.