That's the point -- the CIA, FBI, and NSA determined with "high confidence" [0] that Russia worked to influence us through (among other outlets) the media -- especially social media. It worked, and because of it our votes weren't free.

> Moscow’s influence campaign followed a Russian messaging strategy that blends covert intelligence operations—such as cyber activity—with overt efforts by Russian Government agencies, state-funded media, third-party intermediaries, and paid social media users or “trolls.”

[0] https://www.dni.gov/files/documents/ICA_2017_01.pdf