The F.B.I. is back in the middle of it. When we were handed the Hillary Clinton email investigation in 2015, the bureau’s deputy director said to me, “You know you are totally screwed, right?” He meant that, in a viciously polarized political environment, one side was sure to be furious with the outcome. Sure enough, I saw a tweet declaring me “a political hack,” although the author added, tongue in cheek: “I just can’t figure out which side.”

And those were the good old days. President Trump’s decision to order a one-week investigation into sexual assault allegations against Brett Kavanaugh, his Supreme Court nominee, comes in a time of almost indescribable pain and anger, lies and attacks.

We live in a world where the president routinely attacks the F.B.I. because he fears its work. He calls for his enemies to be prosecuted and his friends freed. We also live in a world where a sitting federal judge channels the president by shouting attacks at the Senate committee considering his nomination and demanding to know if a respected senator has ever passed out from drinking. We live in a world where the president is an accused serial abuser of women, who was caught on tape bragging about his ability to assault women and now likens the accusations against his nominee to the many “false” accusations against him.

Most disturbingly, we live in a world where millions of Republicans and their representatives think nearly everything in the previous paragraph is O.K.