And people like Maddow claimed for months if not years that Trump was a Russian agent, and we now know for a fact that this was never the case and the rumors were started by the FBI under direction of Obama (this was at the same time the Obama administration declined to charge Clinton, mind you) based on intel they knew was false, and because of the investigation launched based on justification from the same known-false evidence
God I'm so tired of explaining this, but seriously, the biggest conspiracy theories of the last decade were promulgated on the pages of "trustworthy" traditional media, and all you have to do is look into the news stories after they leave the headlines to find out how things turned out when time passed and reality finally came to light
Source?
The issue at hand is that there's a problem with resurgent "alt-right" (or whatever you want to call them) extremist groups that have demonstrated a potential for violence as well as infiltration into trusted organizations like the police. They have taken up new aesthetics, symbologies and memes. It's important for people to recognize these new appearances and what they actually signify.