President Trump has displayed enthusiasm for brutality over the past year. He has told the police to treat suspects roughly, praised President Rodrigo Duterte of the Philippines for murdering people suspected of drug ties and called for the execution of drug dealers.

But one of his most unsettling beliefs is still his acceptance of the value of torture. “In my opinion, it works,” he told Sean Hannity of Fox News early last year.

Previously, anyone alarmed by Mr. Trump’s cavalier embrace of government-sanctioned cruelty was reassured by his vow to accept the advice of his defense secretary, Jim Mattis, who opposes torture and promised at his Senate confirmation hearing that he would uphold American and international laws against it.

Now we have reason to be uneasy yet again.

When it comes to torture, no American officials have been more practiced in those heinous dark arts than the officers and employees of the Central Intelligence Agency who applied it to terrorism suspects after 9/11. Few American officials were so directly involved in that frenzy of abuse, which began under President George W. Bush and was ended by President Barack Obama, as Gina Haspel.