John Podhoretz uses a New York Post column to challenge a questionable Democratic electoral tactic.

The Democrats are lucky the February debate in New Hampshire took place on a Friday night, when relatively few were watching — because if they wanted to deliver the message to the working-class white people who delivered the upper Midwest and the presidency to Donald Trump in 2016 that they should stick with him rather than voting blue in November, they did a brilliant job of it.

Tom Steyer, the billionaire who’s trying to buy a win Bloomberg-style in the South Carolina Democratic primary, issued a stark warning at the beginning of the Democratic debate Friday night in New Hampshire: Trump has the economic numbers that can help him get reelected, and Democrats are going to need to have a strong message to overwhelm it.

About an hour into the debate, they found their message: America, Bernie Sanders said, is “a racist society from top to bottom.”

One by one, the candidates echoed the message that “systemic racism” characterizes America. …

… I’m not saying these people are crazy but — these people are crazy. This is crazy talk, and not only because it’s a rotten, lousy lie and a grotesque distortion of history and simple truth.

It’s crazy talk because, unless I’m very much mistaken, you don’t win the presidency by telling the American people the country they live in and that so many of us love is rotten at its core.

It’s one thing to trash Trump, which they did as they always do. It’s one thing to blame him for all kinds of stuff. It’s another to spend an evening trashing the United States of America as a systematically unjust and even evil place whose rot reaches its very foundations.