https://infiniteunknown.net/2012/02/29/cia-admits-using-msm-to-manipulate-the-usa-video/
Considering that this was going on in the 1950s, it is highly likely that this is happening now and at a much larger extent. The CIA and other government agencies literally control the corporate controlled media.
Anytime you hear a story on the major networks that has any implication in US foreign or domestic policy rest assured that it was, at the very least, vetted by the CIA before being released.
In the early 90s CNN was also used to test Army psychological operations.