If you have little to no knowledge of Operation Mockingbird, still in use, watch this primer.
When done, do some in depth research. This program also extended to into Religious Clergy, which is why you see all the twisted BS coming from most church leaders.
...and Hollywood and Universities
EDIT: And we know from WikiLeaks that the DNC was coordinating with over 60 members of the media in 2016 as to what stories to emphasize and how to best spin them.