An article by Jonathan Haidt in The Atlantic has been widely discussed and shared. I recommend taking the time to read it (it is long). It is called “WHY THE PAST 10 YEARS OF AMERICAN LIFE HAVE BEEN UNIQUELY STUPID”.
The TLDR answer is social media. A couple of extracts:
The stupidity on the right is most visible in the many conspiracy theories spreading across right-wing media and now into Congress. “Pizzagate,” QAnon, the belief that vaccines contain microchips, the conviction that Donald Trump won reelection—it’s hard to imagine any of these ideas or belief systems reaching the levels that they have without Facebook and Twitter.
The Democrats have also been hit hard by structural stupidity, though in a different way. In the Democratic Party, the struggle between the progressive wing and the more moderate factions is open and ongoing, and often the moderates win. The problem is that the left controls the commanding heights of the culture: universities, news organizations, Hollywood, art museums, advertising, much of Silicon Valley, and the teachers’ unions and teaching colleges that shape K–12 education. And in many of those institutions, dissent has been stifled: When everyone was issued a dart gun in the early 2010s, many left-leaning institutions began shooting themselves in the brain.
Also true, and not just in the US!
Confused and fearful, the leaders rarely challenged the activists or their nonliberal narrative in which life at every institution is an eternal battle among identity groups over a zero-sum pie, and the people on top got there by oppressing the people on the bottom. This new narrative is rigidly egalitarian––focused on equality of outcomes, not of rights or opportunities. It is unconcerned with individual rights.
The universal charge against people who disagree with this narrative is not “traitor”; it is “racist,” “transphobe,” “Karen,” or some related scarlet letter marking the perpetrator as one who hates or harms a marginalized group. The punishment that feels right for such crimes is not execution; it is public shaming and social death.
You can see the stupefaction process most clearly when a person on the left merely points to research that questions or contradicts a favored belief among progressive activists. Someone on Twitter will find a way to associate the dissenter with racism, and others will pile on.
Again we see this in NZ. A near total focus on equality of outcome, not of rights or opportunities and anyone who disagrees is called a racist.