This tactic has been used for a very long time and it is being used on almost a daily basis now that swamp creatures in DC feel threatened by the Swamp-Drainer-in-Chief.
Step 1) Tell lies about your opponents.
Step 2) The press dutifully publishes the lies.
Step 3) Then you can say, “Look! It’s the truth! You know for sure it’s true because it was reported by mainstream news outlets!”
The solution? Transparency in all things.