I know Facebook, Instagram, Twitter, Reddit and all the rest don't count as broadcast media but I feel like we got here in part because the 1987 elimination of FCC's fairness doctrine slowly allowed a shift in how we communicate with each other. We went from specious claims and conspiracy theories being the subject matter of newsletters to their public broadcast to millions via talk radio ~and Fox News~, thus allowin…
I suspect that the fairness doctrine change is more of a symptom than a cause. The FCC will have close to zero impact on twenty first century media. I don't know how or even if we can fix this.
What happened yesterday in Washington, DC may prove a counterpoint to 1st amendment claims that all speech should be allowed, regardless of consequences.
Edit: I see I was wrong about Fox as it is a cable network and not broadcast over public airwaves. I still think their viewers are insulated from opposing viewpoints and that's part of the problem.