Well the Emperor was able to send communications to Vader from half a galaxy away in Empire.
of course Military communications man be a snuff above commercial communications.
In one of the "what if' mirror universe Star Wars comics that came early this century, where just changed something slight to make the movies really incredibly different... I think in one Luke died on the assault against the first Deathstar and Leia became Vader's Apprentice but the death star survived... And an Imperial news report was now calling it "The Justice Star".
They must have a wealth media of media and news, whether it is true or fabricated to uplift the sentient condition.
Was podracing really just George thinking that he could exploit NASCAR's unexplainable popularity?