This is their intro to their leader on post-truth.. I believe the topic is far broader and the problem more serious, but this is a good place to start.
“CONSIDER how far Donald Trump is estranged from fact. He inhabits a fantastical realm where Barack Obama’s birth certificate was faked, the president founded Islamic State (IS), the Clintons are killers and the father of a rival was with Lee Harvey Oswald before he shot John F. Kennedy.
Mr Trump is the leading exponent of “post-truth” politics—a reliance on assertions that “feel true” but have no basis in fact. His brazenness is not punished, but taken as evidence of his willingness to stand up to elite power. And he is not alone. Members of Poland’s government assert that a previous president, who died in a plane crash, was assassinated by Russia. Turkish politicians claim the perpetrators of the recent bungled coup were acting on orders issued by the CIA. The successful campaign for Britain to leave the European Union warned of the hordes of immigrants that would result from Turkey’s imminent accession to the union.”
This is the introduction to their full article on post-truth politics…
“WHEN Donald Trump, the Republican presidential hopeful, claimed recently that President Barack Obama “is the founder” of Islamic State and Hillary Clinton, the Democratic candidate, the “co-founder”, even some of his supporters were perplexed. Surely he did not mean that literally? Perhaps, suggested Hugh Hewitt, a conservative radio host, he meant that the Obama administration’s rapid pull-out from Iraq “created the vacuum” that the terrorists then filled?
“No, I meant he’s the founder of ISIS,” replied Mr Trump. “He was the most valuable player. I give him the most valuable player award. I give her, too, by the way, Hillary Clinton.”