Tucker Carlson is not a good friend. Just a few years ago, when the podcaster was pretending to be friends with President Trump, Carlson was caught privately saying of Trump: “I hate him passionately.” In September, another person whom Carlson claimed to be friends with — Charlie Kirk — was shot dead. Carlson used the aftermath of his friend’s assassination not to demand that the suspect in the shooting be prosecuted to the fullest extent of the law. He didn’t seize the moment to insist that perhaps the radical left dial down its hateful rhetoric against conservatives and Republicans. Nor...