There are a lot of people who are ruining the country right now, according to Michael Savage. Representative Alexandria Ocasio-Cortez. Liberal mayors in big cities like San Francisco. Undocumented immigrants. Homeless people. But for the past two months, listeners to Mr. Savage’s conservative radio show have heard him howl with unabated contempt about another menace: “The pimps” in the right-wing media “who tell you what you want to hear.” They are “intellectual dwarfs” and “science illiterates,” he says, who spent weeks downplaying the threat from the coronavirus epidemic and accusing President Trump’s opponents of exaggerating it to hurt him politically....