In a February 6, 2015 TedTalk, Sharyl Attkisson explains what astroturfing is and how it affects information on the internet:
Astroturf and manipulation of media messages | Sharyl Attkisson | TEDxUniversityofNevada
Attkisson a few days earlier testified about how the Obama uses astroturfing and other intimidation methods to stifle freedom of the press and to suppress information:
Sharyl Attkisson: If You Cross Obama Admin They Will Treat You Like “Enemies Of The State”
As victims of propaganda and media of control, we should understand the obstacles that we face when trying to spread our message.