To be sure I'm not advocating Communism but perhaps up until 20 years ago the lack of social media helped contain outright lies and extreme views, perhaps with people asking the intellectual(s) in their social circles about candidates. There was also the social engineering aspect of TV soaps (e.g. featuring gay characters to make homosexuality more accepted). Social media has done away with that and allows anyone to broadcast to the world.
The media report the lies and it's impractical to research everything politicians say. Even if someone reports that the lie was a lie, by then the damage is done. Trump played this game all the way through. He knew what he said would be reported far more than the accuracy of the statements.
This result raises a lot of questions, few of which I suspect will be answered and will lead to even fewer changes I imagine.