FB spreads more misinformation than anything else in the history of mankind. That is on both sides. People share things they know are fake for laughs, but then you get people who think it is true. You get people that want to believe it is true. Part of the human condition, we want to believe the worst things about groups we disagree with. FB does have real news too, and I think I'm generally pretty good about filtering out the fake from the true... I look at multiple sources and all that. If something is incredible, I generally don't believe it and search for other sources. Half the time its original citation will be from Babylon Bee or Duffleblog or something.
If there is one thing I learned in my criminal investigation course, it is that eyewitness accounts are some of the worst pieces of evidence you can find.
Ceterum censeo Carthaginem esse delendam