Two days ago, partisan advocacy site ThinkProgress ran an article with the headline "Brett Kavanaught said he would kill Roe v. Wade last week and almost no-one noticed". The reason no-one noticed is because he said nothing of the sort and ThinkProgess knew as much. One of the fact checkers partnered with Facebook labelled it as false, they attached the usual warning, and this made ThinkProgress and a chunk of the left-leaning press furious. They accused Facebook of "defaming" and "censoring" them to "appease the right wing", claiming that this was actually some kind of partisan attack on the truth.

That, in essence, is how we got here. There are plenty of loud, vocal defenders of "truth" out there, it's just that the loudest and most vocal of them define "truth" to mean "what our side believes".