Napoleon once said, "Never interrupt you enemy when he is making a mistake". Harris or her team is brilliant for pursuing that strategy. If Trump is going to stand grinning from ear to ear with a thumbs up in front of the grave of a fallen soldier, just stand back. It is working. It will stop working if Trump stops making mistakes. Fortunately for her, losing to a minority woman has to be a real blow to Trump, so he isn't likely to stop looking like the crazy uncle.
That is the second brilliant strategy, not portraying him as a cross between Hitler and Machiavelli but rather the crazy uncle. Someone you feel sorry for but can't stand to be around for long. And certainly someone you wouldn't want making key decisions for you.
I don't know who created this game plan, but it has tightened the race that was over. And if Trump had an ounce of discipline, it would still be over. He was advised against that early debate. Without it, we would be heading to that September debate with Biden in the opposite corner.
Can he stay on message for a while, who knows. History doesn't think so. But this crazy uncle counterpunch creates a real problem for him.