The past stretch of days—say, since the murder of Renee Good—has been marked by brutality, but also by a dishonesty so deep and stupid that it’s begun to finally turn on the liars. Following the execution of Alex Pretti, for instance, various White House officials were quick to start just plain lying: He was an “assassin” and a “domestic terrorist” who "wanted to do maximum damage and massacre law enforcement."

As many videos emerged in the course of the day, those lies were shown for what they were. Pretti was, at worst, trying to help a woman who was being unnecessarily gassed; for his pains he was executed once he’d been disarmed; the only “weapon” he’d “brandished” was a cell phone. Oh, and instead of being a domestic terrorist he was a VA nurse who treated former soldiers with compassion and dignity.

Politicians, it goes without saying, have sometimes engaged in dishonesty, often with hideous consequences. The Gulf of Tonkin “attacks” that gave America an excuse for war in Vietnam were at least in part fabrications; the “weapons of mass destruction” weren’t in Iraq and there was no compelling reason to think they were. Hell, we had a president—Richard Nixon—known as Tricky Dick for the smears and fibs that marked his whole career, from his first congressional race to the last days of Watergate. But the presidents who told those lies generally attempted to manufacture cover stories or cloud them in enough shadows that they might pass for mistakes. By now, however, we’ve reached a point where the president and his party just recite up-is-down lies constantly. Consider this reckoning of President Donald Trump's first term:

The second term, obviously, is far worse than the first. At this point, it would be far easier for the Post to assign a reporter to list the true things the president says—a list as short as his… temper. (And of course the second-term Post wouldn’t do this, since its owner has castrated one of America’s great papers in an effort to curry favor with the fibber-in-chief). Every lie he tells is then repeated by his satraps in the administration and Congress—the closest they come to shame is when they lie and say that they haven’t heard his latest lies so they don’t have to publicly swallow them. Here at home we’ve gotten so used to this that the lies often barely register—but when Trump went to Davos and gave a speech literally filled with whoppers, European leaders were astonished. He was telling them things that they knew to be absurd—that China has no wind farms, say—and expecting them to go along.

Where the GOP learned to lie as a matter of course is an interesting question, and I’m afraid I’ve had a front row seat. I think it’s the climate fight, more than anything else, that taught them to regard reality as optional. And I think this because I remember the start of it all. When Jim Hansen first testified before the Senate that global warming was real, it caused a society-wide stir; running for the White House, the sitting vice-president George Herbert Walker Bush said he would combat the greenhouse effect with “the White House effect.” He made no attempt to deny it, or pretend it wasn’t a problem; it was reality, he wanted to lead the world, he had to at least pretend to deal with it.

And of course he could have—he could have resurrected Jimmy Carter’s plans (only eight years old) for a rapid solar research and development program, for instance. He seemed like he might; during the campaign he promised to convene a "global conference on the environment at the White House" during his first year in office. That didn’t happen, and it’s fairly easy to figure out why.

At about this same time—1989-1990—the fossil fuel industry was making a fateful decision. They were well aware that global warming was real; as a series of archival documents and whistleblowers have now laid out in excruciating detail, the big oil companies had conducted their own research programs, and reached conclusions just like Hansen’s. (Indeed, Exxon’s internal estimates of how hot the world would be by 2020 turned out to be even more accurate than NASA’s). We know that the executives of these companies believed their scientists—Exxon, for instance, began building drilling rigs higher to compensate for the rise in sea level they knew was coming, and plotting which corners of the Arctic to lease for drilling once it had inevitably melted.

It always has seemed to me that the worst fate would be to walk over this cliff without knowing it was there. Dignity demands understanding.

But they decided, across the industry, that........

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