>The idea that "telling people what to believe" is a phenomenon unique to one side of the political spectrum is absurd. What's been the most watched cable news network in recent years?
This is true, but there's an asymmetry here, and it's best summed up by Conquest's Second Law: any organisation not explicitly right-wing will become left-wing. So in the US nowadays we have right-wing media outlets, which are right-wing, and we have everything else, which is left-wing.
Breitbart is right-wing, and Salon is left-wing, and that's fine -- people go to those sites explicitly because they want news from that perspective. It's what the readers want, and it's what they provide. But GQ is a magazine, dating back to the 1930s, ostensibly about men's fashion and suits and watches and cars and things... so why is it filled with left-wing political content and Trump bashing? It doesn't seem to be a sensible business decision, it just seems to be driven by the personal opinions of the editors.
That, I think, is what the OP means about people not being told what to believe. They don't mind it when explicitly political outlets push a political point of view, but when neutral territory (like GQ or football or Entertainment Weekly) gets politicised then that really turns off at least half the population.