The dangers of an untethered Trump

that the Post should register as Amazon’s lobbyist. Amazon stock wilted.

They’re absurd charges. Amazon collects and pays state sales taxes on its products, and the Postal Service is losing money because of the decline in first-class mail, not package deliveries.

Presumably Amazon can take care of itself. Trump’s attack was intended as a warning to other companies with media connections that they’d better not mess with him

Meanwhile, he’s praising Trump-adoring Sinclair Broadcasting, signaling to the FCC that it should approve Sinclair’s pending $3.9 billion purchase of Tribune Media’s TV stations.

We’re entering a new and more dangerous phase of Trump’s “divide and conquer” strategy, splitting the nation into warring camps — with him as the most divisive issue.

Trump is more determined than ever to convince supporters that special counsel Robert Mueller is in cahoots with Democrats and the FBI to unseat him. This might give him some protection if Trump decides to fire Mueller, or if Mueller’s investigation turns up evidence that Trump collaborated with Russia to win, and Congress moves to impeach him.

“Try to impeach him, just try it,” warned Roger Stone, Trump’s former campaign adviser, last summer. “You will have a spasm of violence in this country, an insurrection like you’ve never seen.”

But Trump’s strategy might just as easily extend beyond Mueller. What happens if in 2020 a rival candidate accumulates more electoral votes, but Trump accuses him or her of cheating and refuses to step down?

“He’s now president for life,” Trump recently said of Chinese President Xi Jinping, adding “maybe we’ll have to give that a shot someday.”

Some thought Trump was joking. I’m not so sure.

Trump untethered isn’t just a more petty, vindictive and belligerent version of his former self. He’s also more willing to sacrifice American democracy to his own ends. Which makes him more dangerous than ever.